+250 When the same constant is added to the numbers $a,$ $b,$ and $c,$ a three-term geometric sequence arises. If $a = 60,$ $b = 100,$ and $c = 140,$ what is the common ratio of the resulting sequence?
+17 You can put it like this.
The ratio of 60 + x : 100 + x is equal to 100 + x : 140 + x,
where x is the constant added to a, b and c.
Hopefully you can find the answer after this.
