Home / 129,620.13-194,430.20-40,882.61

Finding the Fourth Proportional to 129,620.13, 194,430.20 and 40,882.61

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Solution

The fourth proportional to 129,620.13, 194,430.20 and 40,882.61 is: 61,323.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,620.13 : 194,430.20 = 40,882.61 : x
  2. Step 2: Convert to fraction form
    129,620.13/194,430.20 = 40,882.61/x
  3. Step 3: Cross multiply
    129,620.13x = 194,430.20 × 40,882.61
  4. Step 4: Simplify right side
    129,620.13x = 7,948,812,862.26
  5. Step 5: Solve for x
    x = 7,948,812,862.26/129,620.13
  6. Step 6: Final answer
    x = 61,323.91

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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.