Home / 129,665.40-194,789.70-124,708.20

Finding the Fourth Proportional to 129,665.40, 194,789.70 and 124,708.20

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Solution

The fourth proportional to 129,665.40, 194,789.70 and 124,708.20 is: 187,342.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,665.40 : 194,789.70 = 124,708.20 : x
  2. Step 2: Convert to fraction form
    129,665.40/194,789.70 = 124,708.20/x
  3. Step 3: Cross multiply
    129,665.40x = 194,789.70 × 124,708.20
  4. Step 4: Simplify right side
    129,665.40x = 24,291,872,865.54
  5. Step 5: Solve for x
    x = 24,291,872,865.54/129,665.40
  6. Step 6: Final answer
    x = 187,342.75

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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.