Finding the Fourth Proportional to 129,767.20, 194,542.80 and 54,944.80
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Solution
The fourth proportional to 129,767.20, 194,542.80 and 54,944.80 is: 82,371.47
Step by Step Solution
- Step 1: Write the proportion equation
129,767.20 : 194,542.80 = 54,944.80 : x - Step 2: Convert to fraction form
129,767.20/194,542.80 = 54,944.80/x - Step 3: Cross multiply
129,767.20x = 194,542.80 × 54,944.80 - Step 4: Simplify right side
129,767.20x = 10,689,115,237.44 - Step 5: Solve for x
x = 10,689,115,237.44/129,767.20 - Step 6: Final answer
x = 82,371.47
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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.