Time Span of all 4 yugas, And Real ages of men living at that Time.

Some people may be wondering how a person can be so old. But our Puranas describe the average age and height of humans of all four ages. And this is for all humans, not just specific people like Ravana and Shri Ram. However, there is a description of the age of an ascetic like Ravana and an avatar male like Sri Ram being older than the described age. 

As the age reaches its final peak, so does the age and height of human beings. That is, the age and height of people born in the last phase of Satyuga will be less than those born in the first phase of Satyuga. Let's take a look at this as well: 

 

Satyuga: Age - 100000 years, height - 21 hands 

Tretayuga: Age - 10000 years, height - 14 cubits 

Dwaparyuga: Age - 1000 years, height - 7 hands 

Kali Yuga: Age - 100 years, height - 4 hands 

I have tried to summarize this answer as much as I could. Hope you'll like it. Jai Shree Ram. Ramayan