If the range of the function f(x)=x/4 is {28,30,32,34,36}, what is its domain

Hello:
x/4 = 28     x = 112
x/4 = 30     x =  120
x/4 = 32     x =   128
x/4 = 34     x =  136
x/4 = 36     x =   144
the domain is :   {112,120,128,136,144}