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Finding the Third Proportional to 81,584 and 120,860

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Solution

The third proportional to 81,584 and 120,860 is: 179,044.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,584 : 120,860 = 120,860 : x
  2. Step 2: Convert to fraction form
    81,584/120,860 = 120,860/x
  3. Step 3: Cross multiply
    81,584x = 120,860 × 120,860
  4. Step 4: Simplify right side
    81,584x = 14,607,139,600
  5. Step 5: Solve for x
    x = 14,607,139,600/81,584
  6. Step 6: Final answer
    x = 179,044.17

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.