Gravity Form Autopopulate

I have created a Form using Gravity Form. I created a few fields as well(Name, Select Price, and Pricing).

I have attached the Form screenshot

There is a radio button for the "Select Price", the values are 100, 200, 300, 400 and 500.

I want to auto-populate the "Select Price" value in the "Pricing" field.

Suppose I selected 100, it should automatically appear in the "Pricing" field.

Please guide me on how can I achieve this.

enter image description here