Home / 129,816.20-194,691.90-49,836.80

Finding the Fourth Proportional to 129,816.20, 194,691.90 and 49,836.80

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Solution

The fourth proportional to 129,816.20, 194,691.90 and 49,836.80 is: 74,742.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,816.20 : 194,691.90 = 49,836.80 : x
  2. Step 2: Convert to fraction form
    129,816.20/194,691.90 = 49,836.80/x
  3. Step 3: Cross multiply
    129,816.20x = 194,691.90 × 49,836.80
  4. Step 4: Simplify right side
    129,816.20x = 9,702,821,281.92
  5. Step 5: Solve for x
    x = 9,702,821,281.92/129,816.20
  6. Step 6: Final answer
    x = 74,742.76

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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.