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Finding the Fourth Proportional to 80,793.45, 121,190.18 and 80,793.45

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Solution

The fourth proportional to 80,793.45, 121,190.18 and 80,793.45 is: 121,190.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,793.45 : 121,190.18 = 80,793.45 : x
  2. Step 2: Convert to fraction form
    80,793.45/121,190.18 = 80,793.45/x
  3. Step 3: Cross multiply
    80,793.45x = 121,190.18 × 80,793.45
  4. Step 4: Simplify right side
    80,793.45x = 9,791,372,344.35
  5. Step 5: Solve for x
    x = 9,791,372,344.35/80,793.45
  6. Step 6: Final answer
    x = 121,190.18

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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.