Home / 198,785.31-274,320.85-108,142.06

Finding the Fourth Proportional to 198,785.31, 274,320.85 and 108,142.06

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Solution

The fourth proportional to 198,785.31, 274,320.85 and 108,142.06 is: 149,234.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,785.31 : 274,320.85 = 108,142.06 : x
  2. Step 2: Convert to fraction form
    198,785.31/274,320.85 = 108,142.06/x
  3. Step 3: Cross multiply
    198,785.31x = 274,320.85 × 108,142.06
  4. Step 4: Simplify right side
    198,785.31x = 29,665,621,819.95
  5. Step 5: Solve for x
    x = 29,665,621,819.95/198,785.31
  6. Step 6: Final answer
    x = 149,234.48

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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.