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Finding the Third Proportional to 70,800 and 108,660

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Solution

The third proportional to 70,800 and 108,660 is: 166,765.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,800 : 108,660 = 108,660 : x
  2. Step 2: Convert to fraction form
    70,800/108,660 = 108,660/x
  3. Step 3: Cross multiply
    70,800x = 108,660 × 108,660
  4. Step 4: Simplify right side
    70,800x = 11,806,995,600
  5. Step 5: Solve for x
    x = 11,806,995,600/70,800
  6. Step 6: Final answer
    x = 166,765.47

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.