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Finding the Third Proportional to 121,660 and 181,992

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Solution

The third proportional to 121,660 and 181,992 is: 272,243.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,660 : 181,992 = 181,992 : x
  2. Step 2: Convert to fraction form
    121,660/181,992 = 181,992/x
  3. Step 3: Cross multiply
    121,660x = 181,992 × 181,992
  4. Step 4: Simplify right side
    121,660x = 33,121,088,064
  5. Step 5: Solve for x
    x = 33,121,088,064/121,660
  6. Step 6: Final answer
    x = 272,243.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.