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Finding the Fourth Proportional to 95.85, 131.30 and 92.20

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Solution

The fourth proportional to 95.85, 131.30 and 92.20 is: 126.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.85 : 131.30 = 92.20 : x
  2. Step 2: Convert to fraction form
    95.85/131.30 = 92.20/x
  3. Step 3: Cross multiply
    95.85x = 131.30 × 92.20
  4. Step 4: Simplify right side
    95.85x = 12,105.86
  5. Step 5: Solve for x
    x = 12,105.86/95.85
  6. Step 6: Final answer
    x = 126.30

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.