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Finding the Third Proportional to 80,953.50 and 126,729

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Solution

The third proportional to 80,953.50 and 126,729 is: 198,388.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,953.50 : 126,729 = 126,729 : x
  2. Step 2: Convert to fraction form
    80,953.50/126,729 = 126,729/x
  3. Step 3: Cross multiply
    80,953.50x = 126,729 × 126,729
  4. Step 4: Simplify right side
    80,953.50x = 16,060,239,441
  5. Step 5: Solve for x
    x = 16,060,239,441/80,953.50
  6. Step 6: Final answer
    x = 198,388.45

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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.