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Finding the Third Proportional to 81,882 and 122,938

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Solution

The third proportional to 81,882 and 122,938 is: 184,579.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,882 : 122,938 = 122,938 : x
  2. Step 2: Convert to fraction form
    81,882/122,938 = 122,938/x
  3. Step 3: Cross multiply
    81,882x = 122,938 × 122,938
  4. Step 4: Simplify right side
    81,882x = 15,113,751,844
  5. Step 5: Solve for x
    x = 15,113,751,844/81,882
  6. Step 6: Final answer
    x = 184,579.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.