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Finding the Fourth Proportional to 140,951.40, 211,167.90 and 131,620.20

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Solution

The fourth proportional to 140,951.40, 211,167.90 and 131,620.20 is: 197,188.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,951.40 : 211,167.90 = 131,620.20 : x
  2. Step 2: Convert to fraction form
    140,951.40/211,167.90 = 131,620.20/x
  3. Step 3: Cross multiply
    140,951.40x = 211,167.90 × 131,620.20
  4. Step 4: Simplify right side
    140,951.40x = 27,793,961,231.58
  5. Step 5: Solve for x
    x = 27,793,961,231.58/140,951.40
  6. Step 6: Final answer
    x = 197,188.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.