Finding the Fourth Proportional to 191,194,372.20, 286,791,120.84 and 81,948,706.68
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Solution
The fourth proportional to 191,194,372.20, 286,791,120.84 and 81,948,706.68 is: 122,922,872.52
Step by Step Solution
- Step 1: Write the proportion equation
191,194,372.20 : 286,791,120.84 = 81,948,706.68 : x - Step 2: Convert to fraction form
191,194,372.20/286,791,120.84 = 81,948,706.68/x - Step 3: Cross multiply
191,194,372.20x = 286,791,120.84 × 81,948,706.68 - Step 4: Simplify right side
191,194,372.20x = 23,502,161,440,145,596 - Step 5: Solve for x
x = 23,502,161,440,145,596/191,194,372.20 - Step 6: Final answer
x = 122,922,872.52
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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.