Home / 80,176.56-120,400.92-69,659.52

Finding the Fourth Proportional to 80,176.56, 120,400.92 and 69,659.52

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Solution

The fourth proportional to 80,176.56, 120,400.92 and 69,659.52 is: 104,607.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,176.56 : 120,400.92 = 69,659.52 : x
  2. Step 2: Convert to fraction form
    80,176.56/120,400.92 = 69,659.52/x
  3. Step 3: Cross multiply
    80,176.56x = 120,400.92 × 69,659.52
  4. Step 4: Simplify right side
    80,176.56x = 8,387,070,294.76
  5. Step 5: Solve for x
    x = 8,387,070,294.76/80,176.56
  6. Step 6: Final answer
    x = 104,607.51

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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.