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Finding the Fourth Proportional to 136,882.56, 188,899.38 and 80,294.88

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Solution

The fourth proportional to 136,882.56, 188,899.38 and 80,294.88 is: 110,807.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,882.56 : 188,899.38 = 80,294.88 : x
  2. Step 2: Convert to fraction form
    136,882.56/188,899.38 = 80,294.88/x
  3. Step 3: Cross multiply
    136,882.56x = 188,899.38 × 80,294.88
  4. Step 4: Simplify right side
    136,882.56x = 15,167,653,049.17
  5. Step 5: Solve for x
    x = 15,167,653,049.17/136,882.56
  6. Step 6: Final answer
    x = 110,807.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.