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Finding the Fourth Proportional to 139,471.43, 192,519.92 and 82,882.13

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Solution

The fourth proportional to 139,471.43, 192,519.92 and 82,882.13 is: 114,406.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,471.43 : 192,519.92 = 82,882.13 : x
  2. Step 2: Convert to fraction form
    139,471.43/192,519.92 = 82,882.13/x
  3. Step 3: Cross multiply
    139,471.43x = 192,519.92 × 82,882.13
  4. Step 4: Simplify right side
    139,471.43x = 15,956,460,281.64
  5. Step 5: Solve for x
    x = 15,956,460,281.64/139,471.43
  6. Step 6: Final answer
    x = 114,406.66

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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.