Home / 138,825.60-191,565.72-82,226.04

Finding the Fourth Proportional to 138,825.60, 191,565.72 and 82,226.04

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Solution

The fourth proportional to 138,825.60, 191,565.72 and 82,226.04 is: 113,463.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,825.60 : 191,565.72 = 82,226.04 : x
  2. Step 2: Convert to fraction form
    138,825.60/191,565.72 = 82,226.04/x
  3. Step 3: Cross multiply
    138,825.60x = 191,565.72 × 82,226.04
  4. Step 4: Simplify right side
    138,825.60x = 15,751,690,555.35
  5. Step 5: Solve for x
    x = 15,751,690,555.35/138,825.60
  6. Step 6: Final answer
    x = 113,463.88

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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.