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Finding the Fourth Proportional to 140,517.55, 193,867.03 and 80,045.40

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Solution

The fourth proportional to 140,517.55, 193,867.03 and 80,045.40 is: 110,435.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,517.55 : 193,867.03 = 80,045.40 : x
  2. Step 2: Convert to fraction form
    140,517.55/193,867.03 = 80,045.40/x
  3. Step 3: Cross multiply
    140,517.55x = 193,867.03 × 80,045.40
  4. Step 4: Simplify right side
    140,517.55x = 15,518,164,790.22
  5. Step 5: Solve for x
    x = 15,518,164,790.22/140,517.55
  6. Step 6: Final answer
    x = 110,435.78

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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.