Finding the Fourth Proportional to 158,291,878.05, 218,442,812.49 and 87,732,043.74
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Solution
The fourth proportional to 158,291,878.05, 218,442,812.49 and 87,732,043.74 is: 121,070,231.88
Step by Step Solution
- Step 1: Write the proportion equation
158,291,878.05 : 218,442,812.49 = 87,732,043.74 : x - Step 2: Convert to fraction form
158,291,878.05/218,442,812.49 = 87,732,043.74/x - Step 3: Cross multiply
158,291,878.05x = 218,442,812.49 × 87,732,043.74 - Step 4: Simplify right side
158,291,878.05x = 19,164,434,380,061,296 - Step 5: Solve for x
x = 19,164,434,380,061,296/158,291,878.05 - Step 6: Final answer
x = 121,070,231.88
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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.