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Finding the Third Proportional to 123,840 and 179,712

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Solution

The third proportional to 123,840 and 179,712 is: 260,791.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,840 : 179,712 = 179,712 : x
  2. Step 2: Convert to fraction form
    123,840/179,712 = 179,712/x
  3. Step 3: Cross multiply
    123,840x = 179,712 × 179,712
  4. Step 4: Simplify right side
    123,840x = 32,296,402,944
  5. Step 5: Solve for x
    x = 32,296,402,944/123,840
  6. Step 6: Final answer
    x = 260,791.37

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.