Home / 129,761.28-194,718.72-54,877.20

Finding the Fourth Proportional to 129,761.28, 194,718.72 and 54,877.20

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Solution

The fourth proportional to 129,761.28, 194,718.72 and 54,877.20 is: 82,348.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,761.28 : 194,718.72 = 54,877.20 : x
  2. Step 2: Convert to fraction form
    129,761.28/194,718.72 = 54,877.20/x
  3. Step 3: Cross multiply
    129,761.28x = 194,718.72 × 54,877.20
  4. Step 4: Simplify right side
    129,761.28x = 10,685,618,141.18
  5. Step 5: Solve for x
    x = 10,685,618,141.18/129,761.28
  6. Step 6: Final answer
    x = 82,348.28

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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.