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Finding the Fourth Proportional to 139,462.28, 192,474.24 and 82,873.64

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Solution

The fourth proportional to 139,462.28, 192,474.24 and 82,873.64 is: 114,375.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,462.28 : 192,474.24 = 82,873.64 : x
  2. Step 2: Convert to fraction form
    139,462.28/192,474.24 = 82,873.64/x
  3. Step 3: Cross multiply
    139,462.28x = 192,474.24 × 82,873.64
  4. Step 4: Simplify right side
    139,462.28x = 15,951,040,875.03
  5. Step 5: Solve for x
    x = 15,951,040,875.03/139,462.28
  6. Step 6: Final answer
    x = 114,375.31

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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.