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Finding the Fourth Proportional to 136,882.16, 188,851.56 and 80,254.16

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Solution

The fourth proportional to 136,882.16, 188,851.56 and 80,254.16 is: 110,723.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,882.16 : 188,851.56 = 80,254.16 : x
  2. Step 2: Convert to fraction form
    136,882.16/188,851.56 = 80,254.16/x
  3. Step 3: Cross multiply
    136,882.16x = 188,851.56 × 80,254.16
  4. Step 4: Simplify right side
    136,882.16x = 15,156,123,312.49
  5. Step 5: Solve for x
    x = 15,156,123,312.49/136,882.16
  6. Step 6: Final answer
    x = 110,723.88

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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.