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Finding the Fourth Proportional to 96.36, 132.86 and 68.68

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Solution

The fourth proportional to 96.36, 132.86 and 68.68 is: 94.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.36 : 132.86 = 68.68 : x
  2. Step 2: Convert to fraction form
    96.36/132.86 = 68.68/x
  3. Step 3: Cross multiply
    96.36x = 132.86 × 68.68
  4. Step 4: Simplify right side
    96.36x = 9,124.82
  5. Step 5: Solve for x
    x = 9,124.82/96.36
  6. Step 6: Final answer
    x = 94.70

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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.