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Finding the Fourth Proportional to 99.25, 137.04 and 96.19

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Solution

The fourth proportional to 99.25, 137.04 and 96.19 is: 132.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    99.25 : 137.04 = 96.19 : x
  2. Step 2: Convert to fraction form
    99.25/137.04 = 96.19/x
  3. Step 3: Cross multiply
    99.25x = 137.04 × 96.19
  4. Step 4: Simplify right side
    99.25x = 13,181.19
  5. Step 5: Solve for x
    x = 13,181.19/99.25
  6. Step 6: Final answer
    x = 132.81

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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.