SOLUTION: Hi, i've been working on this some for days and cant seem to solve it, I would ask my teacher ofcourse, but i'm homeschooled, so can someone please explain this sum to me? Points

Question 745364: Hi, i've been working on this some for days and cant seem to solve it, I would ask my teacher ofcourse, but i'm homeschooled, so can someone please explain this sum to me?
Points A, B, C, and D lie in consecutive order on a line. If AC=4/3AB and BD=6BC, then what is AB/CD?
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

if => =>
and since we can say:

therefore

furthermore,
substituting: =>
now we have both and in terms of , so:

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