Finding the Fourth Proportional to 122,915,072.51, 169,617,752.17 and 67,162,406.70
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Solution
The fourth proportional to 122,915,072.51, 169,617,752.17 and 67,162,406.70 is: 92,681,363.01
Step by Step Solution
- Step 1: Write the proportion equation
122,915,072.51 : 169,617,752.17 = 67,162,406.70 : x - Step 2: Convert to fraction form
122,915,072.51/169,617,752.17 = 67,162,406.70/x - Step 3: Cross multiply
122,915,072.51x = 169,617,752.17 × 67,162,406.70 - Step 4: Simplify right side
122,915,072.51x = 11,391,936,454,781,348 - Step 5: Solve for x
x = 11,391,936,454,781,348/122,915,072.51 - Step 6: Final answer
x = 92,681,363.01
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.