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Finding the Fourth Proportional to 95.14, 131.16 and 81.33

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Solution

The fourth proportional to 95.14, 131.16 and 81.33 is: 112.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.14 : 131.16 = 81.33 : x
  2. Step 2: Convert to fraction form
    95.14/131.16 = 81.33/x
  3. Step 3: Cross multiply
    95.14x = 131.16 × 81.33
  4. Step 4: Simplify right side
    95.14x = 10,667.24
  5. Step 5: Solve for x
    x = 10,667.24/95.14
  6. Step 6: Final answer
    x = 112.12

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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.