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Finding the Third Proportional to 79,912 and 115,108

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Solution

The third proportional to 79,912 and 115,108 is: 165,805.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,912 : 115,108 = 115,108 : x
  2. Step 2: Convert to fraction form
    79,912/115,108 = 115,108/x
  3. Step 3: Cross multiply
    79,912x = 115,108 × 115,108
  4. Step 4: Simplify right side
    79,912x = 13,249,851,664
  5. Step 5: Solve for x
    x = 13,249,851,664/79,912
  6. Step 6: Final answer
    x = 165,805.53

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.