Home / 129,614.20-194,421.30-76,470.10

Finding the Fourth Proportional to 129,614.20, 194,421.30 and 76,470.10

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Solution

The fourth proportional to 129,614.20, 194,421.30 and 76,470.10 is: 114,705.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,614.20 : 194,421.30 = 76,470.10 : x
  2. Step 2: Convert to fraction form
    129,614.20/194,421.30 = 76,470.10/x
  3. Step 3: Cross multiply
    129,614.20x = 194,421.30 × 76,470.10
  4. Step 4: Simplify right side
    129,614.20x = 14,867,416,253.13
  5. Step 5: Solve for x
    x = 14,867,416,253.13/129,614.20
  6. Step 6: Final answer
    x = 114,705.15

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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.