Home / 198,789.10-274,322.70-108,142.73

Finding the Fourth Proportional to 198,789.10, 274,322.70 and 108,142.73

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Solution

The fourth proportional to 198,789.10, 274,322.70 and 108,142.73 is: 149,233.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,789.10 : 274,322.70 = 108,142.73 : x
  2. Step 2: Convert to fraction form
    198,789.10/274,322.70 = 108,142.73/x
  3. Step 3: Cross multiply
    198,789.10x = 274,322.70 × 108,142.73
  4. Step 4: Simplify right side
    198,789.10x = 29,666,005,949.33
  5. Step 5: Solve for x
    x = 29,666,005,949.33/198,789.10
  6. Step 6: Final answer
    x = 149,233.57

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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.