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Finding the Fourth Proportional to 140,488.96, 193,872.90 and 80,063.20

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Solution

The fourth proportional to 140,488.96, 193,872.90 and 80,063.20 is: 110,486.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,488.96 : 193,872.90 = 80,063.20 : x
  2. Step 2: Convert to fraction form
    140,488.96/193,872.90 = 80,063.20/x
  3. Step 3: Cross multiply
    140,488.96x = 193,872.90 × 80,063.20
  4. Step 4: Simplify right side
    140,488.96x = 15,522,084,767.28
  5. Step 5: Solve for x
    x = 15,522,084,767.28/140,488.96
  6. Step 6: Final answer
    x = 110,486.15

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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.