Home / 137,717.10-206,575.65-81,729.90

Finding the Fourth Proportional to 137,717.10, 206,575.65 and 81,729.90

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Solution

The fourth proportional to 137,717.10, 206,575.65 and 81,729.90 is: 122,594.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,717.10 : 206,575.65 = 81,729.90 : x
  2. Step 2: Convert to fraction form
    137,717.10/206,575.65 = 81,729.90/x
  3. Step 3: Cross multiply
    137,717.10x = 206,575.65 × 81,729.90
  4. Step 4: Simplify right side
    137,717.10x = 16,883,407,216.94
  5. Step 5: Solve for x
    x = 16,883,407,216.94/137,717.10
  6. Step 6: Final answer
    x = 122,594.85

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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.