Finding the Fourth Proportional to 103,257,534.18, 142,489,988.15 and 56,838,721.62
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Solution
The fourth proportional to 103,257,534.18, 142,489,988.15 and 56,838,721.62 is: 78,434,458.41
Step by Step Solution
- Step 1: Write the proportion equation
103,257,534.18 : 142,489,988.15 = 56,838,721.62 : x - Step 2: Convert to fraction form
103,257,534.18/142,489,988.15 = 56,838,721.62/x - Step 3: Cross multiply
103,257,534.18x = 142,489,988.15 × 56,838,721.62 - Step 4: Simplify right side
103,257,534.18x = 8,098,948,769,810,755 - Step 5: Solve for x
x = 8,098,948,769,810,755/103,257,534.18 - Step 6: Final answer
x = 78,434,458.41
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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.