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Finding the Fourth Proportional to 95.82, 131.22 and 91.19

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Solution

The fourth proportional to 95.82, 131.22 and 91.19 is: 124.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.82 : 131.22 = 91.19 : x
  2. Step 2: Convert to fraction form
    95.82/131.22 = 91.19/x
  3. Step 3: Cross multiply
    95.82x = 131.22 × 91.19
  4. Step 4: Simplify right side
    95.82x = 11,966.28
  5. Step 5: Solve for x
    x = 11,966.28/95.82
  6. Step 6: Final answer
    x = 124.89

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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.