Finding the Fourth Proportional to 133,042.20, 199,563.30 and 54,115.80
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Solution
The fourth proportional to 133,042.20, 199,563.30 and 54,115.80 is: 81,173.70
Step by Step Solution
- Step 1: Write the proportion equation
133,042.20 : 199,563.30 = 54,115.80 : x - Step 2: Convert to fraction form
133,042.20/199,563.30 = 54,115.80/x - Step 3: Cross multiply
133,042.20x = 199,563.30 × 54,115.80 - Step 4: Simplify right side
133,042.20x = 10,799,527,630.14 - Step 5: Solve for x
x = 10,799,527,630.14/133,042.20 - Step 6: Final answer
x = 81,173.70
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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.