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Finding the Third Proportional to 84,906 and 131,408

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Solution

The third proportional to 84,906 and 131,408 is: 203,378.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,906 : 131,408 = 131,408 : x
  2. Step 2: Convert to fraction form
    84,906/131,408 = 131,408/x
  3. Step 3: Cross multiply
    84,906x = 131,408 × 131,408
  4. Step 4: Simplify right side
    84,906x = 17,268,062,464
  5. Step 5: Solve for x
    x = 17,268,062,464/84,906
  6. Step 6: Final answer
    x = 203,378.59

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.