Home / 129,711.28-194,372.44-100,084.72

Finding the Fourth Proportional to 129,711.28, 194,372.44 and 100,084.72

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Solution

The fourth proportional to 129,711.28, 194,372.44 and 100,084.72 is: 149,977.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,711.28 : 194,372.44 = 100,084.72 : x
  2. Step 2: Convert to fraction form
    129,711.28/194,372.44 = 100,084.72/x
  3. Step 3: Cross multiply
    129,711.28x = 194,372.44 × 100,084.72
  4. Step 4: Simplify right side
    129,711.28x = 19,453,711,233.12
  5. Step 5: Solve for x
    x = 19,453,711,233.12/129,711.28
  6. Step 6: Final answer
    x = 149,977.02

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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.