Finding the Fourth Proportional to 133,034,996.20, 199,552,494.30 and 78,615,437.80
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Solution
The fourth proportional to 133,034,996.20, 199,552,494.30 and 78,615,437.80 is: 117,923,156.70
Step by Step Solution
- Step 1: Write the proportion equation
133,034,996.20 : 199,552,494.30 = 78,615,437.80 : x - Step 2: Convert to fraction form
133,034,996.20/199,552,494.30 = 78,615,437.80/x - Step 3: Cross multiply
133,034,996.20x = 199,552,494.30 × 78,615,437.80 - Step 4: Simplify right side
133,034,996.20x = 15,687,906,703,476,504 - Step 5: Solve for x
x = 15,687,906,703,476,504/133,034,996.20 - Step 6: Final answer
x = 117,923,156.70
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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.