Home / 198,640.77-274,129.67-108,002.85

Finding the Fourth Proportional to 198,640.77, 274,129.67 and 108,002.85

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Solution

The fourth proportional to 198,640.77, 274,129.67 and 108,002.85 is: 149,046.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,640.77 : 274,129.67 = 108,002.85 : x
  2. Step 2: Convert to fraction form
    198,640.77/274,129.67 = 108,002.85/x
  3. Step 3: Cross multiply
    198,640.77x = 274,129.67 × 108,002.85
  4. Step 4: Simplify right side
    198,640.77x = 29,606,785,089.55
  5. Step 5: Solve for x
    x = 29,606,785,089.55/198,640.77
  6. Step 6: Final answer
    x = 149,046.87

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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.