What is the next number in this geometric sequence?

-3.24, 9.72, -29.16, 87.48, , ...

Question

What is the next number in this geometric sequence?

-3.24, 9.72, -29.16, 87.48, , ...

hartnn · Answer

Hi rachel :)
Can you find the common ratio "r" between the terms ? or know what it is ?

anonymous · Answer

i think its 3 i got 3 by dividing 9.72 & -3.24 (:

hartnn · Answer

when you dive a positive number by a negative number, you get a negative number :)

anonymous · Answer

Oh yeah its -3 haha but the choices are 	A.	174.96
 		B.	-174.96
 		C.	-262.44
 		D.	262.44

hartnn · Answer

ok, so -3 is the common ratio :)

each nect term is -3 times the current term!

so the next term in your sequence will be 87.48 times -3 = ... ?