Home / 198,789.76-274,331.08-108,146.56

Finding the Fourth Proportional to 198,789.76, 274,331.08 and 108,146.56

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Solution

The fourth proportional to 198,789.76, 274,331.08 and 108,146.56 is: 149,242.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,789.76 : 274,331.08 = 108,146.56 : x
  2. Step 2: Convert to fraction form
    198,789.76/274,331.08 = 108,146.56/x
  3. Step 3: Cross multiply
    198,789.76x = 274,331.08 × 108,146.56
  4. Step 4: Simplify right side
    198,789.76x = 29,667,962,603.08
  5. Step 5: Solve for x
    x = 29,667,962,603.08/198,789.76
  6. Step 6: Final answer
    x = 149,242.91

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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.