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Finding the Third Proportional to 121.75 and 174

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Solution

The third proportional to 121.75 and 174 is: 248.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    121.75 : 174 = 174 : x
  2. Step 2: Convert to fraction form
    121.75/174 = 174/x
  3. Step 3: Cross multiply
    121.75x = 174 × 174
  4. Step 4: Simplify right side
    121.75x = 30,276
  5. Step 5: Solve for x
    x = 30,276/121.75
  6. Step 6: Final answer
    x = 248.67

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These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.