Finding the Fourth Proportional to 123,902,963.88, 171,160,938.18 and 99,286,675.08
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Solution
The fourth proportional to 123,902,963.88, 171,160,938.18 and 99,286,675.08 is: 137,155,721.89
Step by Step Solution
- Step 1: Write the proportion equation
123,902,963.88 : 171,160,938.18 = 99,286,675.08 : x - Step 2: Convert to fraction form
123,902,963.88/171,160,938.18 = 99,286,675.08/x - Step 3: Cross multiply
123,902,963.88x = 171,160,938.18 × 99,286,675.08 - Step 4: Simplify right side
123,902,963.88x = 16,994,000,455,465,626 - Step 5: Solve for x
x = 16,994,000,455,465,626/123,902,963.88 - Step 6: Final answer
x = 137,155,721.89
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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.