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Finding the Third Proportional to 115,980 and 179,208

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Solution

The third proportional to 115,980 and 179,208 is: 276,905.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,980 : 179,208 = 179,208 : x
  2. Step 2: Convert to fraction form
    115,980/179,208 = 179,208/x
  3. Step 3: Cross multiply
    115,980x = 179,208 × 179,208
  4. Step 4: Simplify right side
    115,980x = 32,115,507,264
  5. Step 5: Solve for x
    x = 32,115,507,264/115,980
  6. Step 6: Final answer
    x = 276,905.56

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.