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Finding the Third Proportional to 122 and 158.50

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Solution

The third proportional to 122 and 158.50 is: 205.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    122 : 158.50 = 158.50 : x
  2. Step 2: Convert to fraction form
    122/158.50 = 158.50/x
  3. Step 3: Cross multiply
    122x = 158.50 × 158.50
  4. Step 4: Simplify right side
    122x = 25,122.25
  5. Step 5: Solve for x
    x = 25,122.25/122
  6. Step 6: Final answer
    x = 205.92

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.