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Finding the Fourth Proportional to 148,401.54, 204,793.65 and 80,418.78

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Solution

The fourth proportional to 148,401.54, 204,793.65 and 80,418.78 is: 110,977.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,401.54 : 204,793.65 = 80,418.78 : x
  2. Step 2: Convert to fraction form
    148,401.54/204,793.65 = 80,418.78/x
  3. Step 3: Cross multiply
    148,401.54x = 204,793.65 × 80,418.78
  4. Step 4: Simplify right side
    148,401.54x = 16,469,255,484.75
  5. Step 5: Solve for x
    x = 16,469,255,484.75/148,401.54
  6. Step 6: Final answer
    x = 110,977.66

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1.5x scale

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.