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Finding the Third Proportional to 115,984 and 177,720

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Solution

The third proportional to 115,984 and 177,720 is: 272,316.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,984 : 177,720 = 177,720 : x
  2. Step 2: Convert to fraction form
    115,984/177,720 = 177,720/x
  3. Step 3: Cross multiply
    115,984x = 177,720 × 177,720
  4. Step 4: Simplify right side
    115,984x = 31,584,398,400
  5. Step 5: Solve for x
    x = 31,584,398,400/115,984
  6. Step 6: Final answer
    x = 272,316.86

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.