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Finding the Fourth Proportional to 117.24, 161.39 and 96.48

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Solution

The fourth proportional to 117.24, 161.39 and 96.48 is: 132.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.24 : 161.39 = 96.48 : x
  2. Step 2: Convert to fraction form
    117.24/161.39 = 96.48/x
  3. Step 3: Cross multiply
    117.24x = 161.39 × 96.48
  4. Step 4: Simplify right side
    117.24x = 15,571.39
  5. Step 5: Solve for x
    x = 15,571.39/117.24
  6. Step 6: Final answer
    x = 132.82

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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.