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Finding the Third Proportional to 72,678 and 98,163

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Solution

The third proportional to 72,678 and 98,163 is: 132,584.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,678 : 98,163 = 98,163 : x
  2. Step 2: Convert to fraction form
    72,678/98,163 = 98,163/x
  3. Step 3: Cross multiply
    72,678x = 98,163 × 98,163
  4. Step 4: Simplify right side
    72,678x = 9,635,974,569
  5. Step 5: Solve for x
    x = 9,635,974,569/72,678
  6. Step 6: Final answer
    x = 132,584.48

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.