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Finding the Third Proportional to 72,692 and 106,660

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Solution

The third proportional to 72,692 and 106,660 is: 156,500.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,692 : 106,660 = 106,660 : x
  2. Step 2: Convert to fraction form
    72,692/106,660 = 106,660/x
  3. Step 3: Cross multiply
    72,692x = 106,660 × 106,660
  4. Step 4: Simplify right side
    72,692x = 11,376,355,600
  5. Step 5: Solve for x
    x = 11,376,355,600/72,692
  6. Step 6: Final answer
    x = 156,500.79

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.