Home / 281,561.13-422,396.78-123,789.06

Finding the Fourth Proportional to 281,561.13, 422,396.78 and 123,789.06

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Solution

The fourth proportional to 281,561.13, 422,396.78 and 123,789.06 is: 185,707.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,561.13 : 422,396.78 = 123,789.06 : x
  2. Step 2: Convert to fraction form
    281,561.13/422,396.78 = 123,789.06/x
  3. Step 3: Cross multiply
    281,561.13x = 422,396.78 × 123,789.06
  4. Step 4: Simplify right side
    281,561.13x = 52,288,099,724.28
  5. Step 5: Solve for x
    x = 52,288,099,724.28/281,561.13
  6. Step 6: Final answer
    x = 185,707.81

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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.