Home / 148,691.75-205,194.82-80,708.74

Finding the Fourth Proportional to 148,691.75, 205,194.82 and 80,708.74

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Solution

The fourth proportional to 148,691.75, 205,194.82 and 80,708.74 is: 111,378.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,691.75 : 205,194.82 = 80,708.74 : x
  2. Step 2: Convert to fraction form
    148,691.75/205,194.82 = 80,708.74/x
  3. Step 3: Cross multiply
    148,691.75x = 205,194.82 × 80,708.74
  4. Step 4: Simplify right side
    148,691.75x = 16,561,015,376.73
  5. Step 5: Solve for x
    x = 16,561,015,376.73/148,691.75
  6. Step 6: Final answer
    x = 111,378.17

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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.