Finding the Fourth Proportional to 136,609,633.62, 188,521,542.42 and 74,729,972.20
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Solution
The fourth proportional to 136,609,633.62, 188,521,542.42 and 74,729,972.20 is: 103,127,497.31
Step by Step Solution
- Step 1: Write the proportion equation
136,609,633.62 : 188,521,542.42 = 74,729,972.20 : x - Step 2: Convert to fraction form
136,609,633.62/188,521,542.42 = 74,729,972.20/x - Step 3: Cross multiply
136,609,633.62x = 188,521,542.42 × 74,729,972.20 - Step 4: Simplify right side
136,609,633.62x = 14,088,209,624,147,720 - Step 5: Solve for x
x = 14,088,209,624,147,720/136,609,633.62 - Step 6: Final answer
x = 103,127,497.31
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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.