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Finding the Third Proportional to 79,740 and 108,344

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Solution

The third proportional to 79,740 and 108,344 is: 147,208.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,740 : 108,344 = 108,344 : x
  2. Step 2: Convert to fraction form
    79,740/108,344 = 108,344/x
  3. Step 3: Cross multiply
    79,740x = 108,344 × 108,344
  4. Step 4: Simplify right side
    79,740x = 11,738,422,336
  5. Step 5: Solve for x
    x = 11,738,422,336/79,740
  6. Step 6: Final answer
    x = 147,208.71

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.