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Finding the Third Proportional to 75,090 and 161,772

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Solution

The third proportional to 75,090 and 161,772 is: 348,517.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,090 : 161,772 = 161,772 : x
  2. Step 2: Convert to fraction form
    75,090/161,772 = 161,772/x
  3. Step 3: Cross multiply
    75,090x = 161,772 × 161,772
  4. Step 4: Simplify right side
    75,090x = 26,170,179,984
  5. Step 5: Solve for x
    x = 26,170,179,984/75,090
  6. Step 6: Final answer
    x = 348,517.51

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.