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Finding the Third Proportional to 68 and 96.88

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Solution

The third proportional to 68 and 96.88 is: 138.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    68 : 96.88 = 96.88 : x
  2. Step 2: Convert to fraction form
    68/96.88 = 96.88/x
  3. Step 3: Cross multiply
    68x = 96.88 × 96.88
  4. Step 4: Simplify right side
    68x = 9,384.77
  5. Step 5: Solve for x
    x = 9,384.77/68
  6. Step 6: Final answer
    x = 138.01

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.