Home / 140,543.78-193,960.94-80,115.86

Finding the Fourth Proportional to 140,543.78, 193,960.94 and 80,115.86

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Solution

The fourth proportional to 140,543.78, 193,960.94 and 80,115.86 is: 110,565.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,543.78 : 193,960.94 = 80,115.86 : x
  2. Step 2: Convert to fraction form
    140,543.78/193,960.94 = 80,115.86/x
  3. Step 3: Cross multiply
    140,543.78x = 193,960.94 × 80,115.86
  4. Step 4: Simplify right side
    140,543.78x = 15,539,346,744.99
  5. Step 5: Solve for x
    x = 15,539,346,744.99/140,543.78
  6. Step 6: Final answer
    x = 110,565.88

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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.