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Finding the Fourth Proportional to 96.07, 132.25 and 81.22

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Solution

The fourth proportional to 96.07, 132.25 and 81.22 is: 111.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.07 : 132.25 = 81.22 : x
  2. Step 2: Convert to fraction form
    96.07/132.25 = 81.22/x
  3. Step 3: Cross multiply
    96.07x = 132.25 × 81.22
  4. Step 4: Simplify right side
    96.07x = 10,741.35
  5. Step 5: Solve for x
    x = 10,741.35/96.07
  6. Step 6: Final answer
    x = 111.81

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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.