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Finding the Third Proportional to 57,242 and 122,949

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Solution

The third proportional to 57,242 and 122,949 is: 264,079.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,242 : 122,949 = 122,949 : x
  2. Step 2: Convert to fraction form
    57,242/122,949 = 122,949/x
  3. Step 3: Cross multiply
    57,242x = 122,949 × 122,949
  4. Step 4: Simplify right side
    57,242x = 15,116,456,601
  5. Step 5: Solve for x
    x = 15,116,456,601/57,242
  6. Step 6: Final answer
    x = 264,079.81

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.