Home / 198,857.97-274,429.76-108,219.78

Finding the Fourth Proportional to 198,857.97, 274,429.76 and 108,219.78

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Solution

The fourth proportional to 198,857.97, 274,429.76 and 108,219.78 is: 149,346.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,857.97 : 274,429.76 = 108,219.78 : x
  2. Step 2: Convert to fraction form
    198,857.97/274,429.76 = 108,219.78/x
  3. Step 3: Cross multiply
    198,857.97x = 274,429.76 × 108,219.78
  4. Step 4: Simplify right side
    198,857.97x = 29,698,727,711.55
  5. Step 5: Solve for x
    x = 29,698,727,711.55/198,857.97
  6. Step 6: Final answer
    x = 149,346.43

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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.