Home / 149,523.91-206,342.39-81,540.71

Finding the Fourth Proportional to 149,523.91, 206,342.39 and 81,540.71

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Solution

The fourth proportional to 149,523.91, 206,342.39 and 81,540.71 is: 112,525.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,523.91 : 206,342.39 = 81,540.71 : x
  2. Step 2: Convert to fraction form
    149,523.91/206,342.39 = 81,540.71/x
  3. Step 3: Cross multiply
    149,523.91x = 206,342.39 × 81,540.71
  4. Step 4: Simplify right side
    149,523.91x = 16,825,304,470.95
  5. Step 5: Solve for x
    x = 16,825,304,470.95/149,523.91
  6. Step 6: Final answer
    x = 112,525.85

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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.