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Finding the Third Proportional to 79,890 and 125,319

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Solution

The third proportional to 79,890 and 125,319 is: 196,580.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,890 : 125,319 = 125,319 : x
  2. Step 2: Convert to fraction form
    79,890/125,319 = 125,319/x
  3. Step 3: Cross multiply
    79,890x = 125,319 × 125,319
  4. Step 4: Simplify right side
    79,890x = 15,704,851,761
  5. Step 5: Solve for x
    x = 15,704,851,761/79,890
  6. Step 6: Final answer
    x = 196,580.95

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.