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Finding the Fourth Proportional to 140,488.80, 193,893.12 and 80,081.28

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Solution

The fourth proportional to 140,488.80, 193,893.12 and 80,081.28 is: 110,522.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,488.80 : 193,893.12 = 80,081.28 : x
  2. Step 2: Convert to fraction form
    140,488.80/193,893.12 = 80,081.28/x
  3. Step 3: Cross multiply
    140,488.80x = 193,893.12 × 80,081.28
  4. Step 4: Simplify right side
    140,488.80x = 15,527,209,232.79
  5. Step 5: Solve for x
    x = 15,527,209,232.79/140,488.80
  6. Step 6: Final answer
    x = 110,522.76

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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.