Home / 129,622.20-194,141.70-77,134.20

Finding the Fourth Proportional to 129,622.20, 194,141.70 and 77,134.20

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Solution

The fourth proportional to 129,622.20, 194,141.70 and 77,134.20 is: 115,527.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,622.20 : 194,141.70 = 77,134.20 : x
  2. Step 2: Convert to fraction form
    129,622.20/194,141.70 = 77,134.20/x
  3. Step 3: Cross multiply
    129,622.20x = 194,141.70 × 77,134.20
  4. Step 4: Simplify right side
    129,622.20x = 14,974,964,716.14
  5. Step 5: Solve for x
    x = 14,974,964,716.14/129,622.20
  6. Step 6: Final answer
    x = 115,527.78

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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.