Home / 129,663.19-194,359.92-54,720.78

Finding the Fourth Proportional to 129,663.19, 194,359.92 and 54,720.78

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Solution

The fourth proportional to 129,663.19, 194,359.92 and 54,720.78 is: 82,024.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,663.19 : 194,359.92 = 54,720.78 : x
  2. Step 2: Convert to fraction form
    129,663.19/194,359.92 = 54,720.78/x
  3. Step 3: Cross multiply
    129,663.19x = 194,359.92 × 54,720.78
  4. Step 4: Simplify right side
    129,663.19x = 10,635,526,423.14
  5. Step 5: Solve for x
    x = 10,635,526,423.14/129,663.19
  6. Step 6: Final answer
    x = 82,024.25

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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.