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Finding the Fourth Proportional to 140,422.44, 193,773.78 and 79,984.20

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Solution

The fourth proportional to 140,422.44, 193,773.78 and 79,984.20 is: 110,372.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,422.44 : 193,773.78 = 79,984.20 : x
  2. Step 2: Convert to fraction form
    140,422.44/193,773.78 = 79,984.20/x
  3. Step 3: Cross multiply
    140,422.44x = 193,773.78 × 79,984.20
  4. Step 4: Simplify right side
    140,422.44x = 15,498,840,774.28
  5. Step 5: Solve for x
    x = 15,498,840,774.28/140,422.44
  6. Step 6: Final answer
    x = 110,372.96

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1.5x scale

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.