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Finding the Fourth Proportional to 148,674.80, 205,171.43 and 80,691.77

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Solution

The fourth proportional to 148,674.80, 205,171.43 and 80,691.77 is: 111,354.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,674.80 : 205,171.43 = 80,691.77 : x
  2. Step 2: Convert to fraction form
    148,674.80/205,171.43 = 80,691.77/x
  3. Step 3: Cross multiply
    148,674.80x = 205,171.43 × 80,691.77
  4. Step 4: Simplify right side
    148,674.80x = 16,555,645,949.60
  5. Step 5: Solve for x
    x = 16,555,645,949.60/148,674.80
  6. Step 6: Final answer
    x = 111,354.75

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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.