Home / 281,870.12-422,760.17-82,143.79

Finding the Fourth Proportional to 281,870.12, 422,760.17 and 82,143.79

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Solution

The fourth proportional to 281,870.12, 422,760.17 and 82,143.79 is: 123,202.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,870.12 : 422,760.17 = 82,143.79 : x
  2. Step 2: Convert to fraction form
    281,870.12/422,760.17 = 82,143.79/x
  3. Step 3: Cross multiply
    281,870.12x = 422,760.17 × 82,143.79
  4. Step 4: Simplify right side
    281,870.12x = 34,727,121,773.30
  5. Step 5: Solve for x
    x = 34,727,121,773.30/281,870.12
  6. Step 6: Final answer
    x = 123,202.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.