Home / 149,743.30-206,646.46-81,761.64

Finding the Fourth Proportional to 149,743.30, 206,646.46 and 81,761.64

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Solution

The fourth proportional to 149,743.30, 206,646.46 and 81,761.64 is: 112,831.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,743.30 : 206,646.46 = 81,761.64 : x
  2. Step 2: Convert to fraction form
    149,743.30/206,646.46 = 81,761.64/x
  3. Step 3: Cross multiply
    149,743.30x = 206,646.46 × 81,761.64
  4. Step 4: Simplify right side
    149,743.30x = 16,895,753,469.79
  5. Step 5: Solve for x
    x = 16,895,753,469.79/149,743.30
  6. Step 6: Final answer
    x = 112,831.45

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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.