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Finding the Third Proportional to 71,378 and 110,759

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Solution

The third proportional to 71,378 and 110,759 is: 171,867.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,378 : 110,759 = 110,759 : x
  2. Step 2: Convert to fraction form
    71,378/110,759 = 110,759/x
  3. Step 3: Cross multiply
    71,378x = 110,759 × 110,759
  4. Step 4: Simplify right side
    71,378x = 12,267,556,081
  5. Step 5: Solve for x
    x = 12,267,556,081/71,378
  6. Step 6: Final answer
    x = 171,867.47

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.