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Finding the Fourth Proportional to 96.13, 132.48 and 90.07

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Solution

The fourth proportional to 96.13, 132.48 and 90.07 is: 124.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.13 : 132.48 = 90.07 : x
  2. Step 2: Convert to fraction form
    96.13/132.48 = 90.07/x
  3. Step 3: Cross multiply
    96.13x = 132.48 × 90.07
  4. Step 4: Simplify right side
    96.13x = 11,932.47
  5. Step 5: Solve for x
    x = 11,932.47/96.13
  6. Step 6: Final answer
    x = 124.13

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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.