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Finding the Third Proportional to 127,434 and 178,279

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Solution

The third proportional to 127,434 and 178,279 is: 249,410.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,434 : 178,279 = 178,279 : x
  2. Step 2: Convert to fraction form
    127,434/178,279 = 178,279/x
  3. Step 3: Cross multiply
    127,434x = 178,279 × 178,279
  4. Step 4: Simplify right side
    127,434x = 31,783,401,841
  5. Step 5: Solve for x
    x = 31,783,401,841/127,434
  6. Step 6: Final answer
    x = 249,410.69

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.