Home / 198,640.49-274,129.25-108,002.54

Finding the Fourth Proportional to 198,640.49, 274,129.25 and 108,002.54

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Solution

The fourth proportional to 198,640.49, 274,129.25 and 108,002.54 is: 149,046.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,640.49 : 274,129.25 = 108,002.54 : x
  2. Step 2: Convert to fraction form
    198,640.49/274,129.25 = 108,002.54/x
  3. Step 3: Cross multiply
    198,640.49x = 274,129.25 × 108,002.54
  4. Step 4: Simplify right side
    198,640.49x = 29,606,653,377.64
  5. Step 5: Solve for x
    x = 29,606,653,377.64/198,640.49
  6. Step 6: Final answer
    x = 149,046.42

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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.