Finding the Fourth Proportional to 117,446,427.20, 176,169,640.80 and 68,947,515.20
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Solution
The fourth proportional to 117,446,427.20, 176,169,640.80 and 68,947,515.20 is: 103,421,272.80
Step by Step Solution
- Step 1: Write the proportion equation
117,446,427.20 : 176,169,640.80 = 68,947,515.20 : x - Step 2: Convert to fraction form
117,446,427.20/176,169,640.80 = 68,947,515.20/x - Step 3: Cross multiply
117,446,427.20x = 176,169,640.80 × 68,947,515.20 - Step 4: Simplify right side
117,446,427.20x = 12,146,458,986,836,542 - Step 5: Solve for x
x = 12,146,458,986,836,542/117,446,427.20 - Step 6: Final answer
x = 103,421,272.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.