Home / 198,748.80-274,277.86-108,109.61

Finding the Fourth Proportional to 198,748.80, 274,277.86 and 108,109.61

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Solution

The fourth proportional to 198,748.80, 274,277.86 and 108,109.61 is: 149,193.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,748.80 : 274,277.86 = 108,109.61 : x
  2. Step 2: Convert to fraction form
    198,748.80/274,277.86 = 108,109.61/x
  3. Step 3: Cross multiply
    198,748.80x = 274,277.86 × 108,109.61
  4. Step 4: Simplify right side
    198,748.80x = 29,652,071,863.11
  5. Step 5: Solve for x
    x = 29,652,071,863.11/198,748.80
  6. Step 6: Final answer
    x = 149,193.72

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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.