Finding the Fourth Proportional to 102,437,832.42, 141,274,869.35 and 72,609,481.58
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Solution
The fourth proportional to 102,437,832.42, 141,274,869.35 and 72,609,481.58 is: 100,137,759.47
Step by Step Solution
- Step 1: Write the proportion equation
102,437,832.42 : 141,274,869.35 = 72,609,481.58 : x - Step 2: Convert to fraction form
102,437,832.42/141,274,869.35 = 72,609,481.58/x - Step 3: Cross multiply
102,437,832.42x = 141,274,869.35 × 72,609,481.58 - Step 4: Simplify right side
102,437,832.42x = 10,257,895,023,785,730 - Step 5: Solve for x
x = 10,257,895,023,785,730/102,437,832.42 - Step 6: Final answer
x = 100,137,759.47
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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.