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Finding the Fourth Proportional to 148,941.70, 205,540.68 and 80,958.70

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Solution

The fourth proportional to 148,941.70, 205,540.68 and 80,958.70 is: 111,723.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,941.70 : 205,540.68 = 80,958.70 : x
  2. Step 2: Convert to fraction form
    148,941.70/205,540.68 = 80,958.70/x
  3. Step 3: Cross multiply
    148,941.70x = 205,540.68 × 80,958.70
  4. Step 4: Simplify right side
    148,941.70x = 16,640,306,249.92
  5. Step 5: Solve for x
    x = 16,640,306,249.92/148,941.70
  6. Step 6: Final answer
    x = 111,723.62

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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.