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Finding the Fourth Proportional to 147,292.80, 220,793.40 and 72,351.60

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Solution

The fourth proportional to 147,292.80, 220,793.40 and 72,351.60 is: 108,455.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,292.80 : 220,793.40 = 72,351.60 : x
  2. Step 2: Convert to fraction form
    147,292.80/220,793.40 = 72,351.60/x
  3. Step 3: Cross multiply
    147,292.80x = 220,793.40 × 72,351.60
  4. Step 4: Simplify right side
    147,292.80x = 15,974,755,759.44
  5. Step 5: Solve for x
    x = 15,974,755,759.44/147,292.80
  6. Step 6: Final answer
    x = 108,455.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.