Finding the Fourth Proportional to 141,793,972.20, 212,690,958.30 and 121,386,637.80
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Solution
The fourth proportional to 141,793,972.20, 212,690,958.30 and 121,386,637.80 is: 182,079,956.70
Step by Step Solution
- Step 1: Write the proportion equation
141,793,972.20 : 212,690,958.30 = 121,386,637.80 : x - Step 2: Convert to fraction form
141,793,972.20/212,690,958.30 = 121,386,637.80/x - Step 3: Cross multiply
141,793,972.20x = 212,690,958.30 × 121,386,637.80 - Step 4: Simplify right side
141,793,972.20x = 25,817,840,318,497,004 - Step 5: Solve for x
x = 25,817,840,318,497,004/141,793,972.20 - Step 6: Final answer
x = 182,079,956.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.