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Finding the Third Proportional to 51,128 and 108,880

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Solution

The third proportional to 51,128 and 108,880 is: 231,866.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,128 : 108,880 = 108,880 : x
  2. Step 2: Convert to fraction form
    51,128/108,880 = 108,880/x
  3. Step 3: Cross multiply
    51,128x = 108,880 × 108,880
  4. Step 4: Simplify right side
    51,128x = 11,854,854,400
  5. Step 5: Solve for x
    x = 11,854,854,400/51,128
  6. Step 6: Final answer
    x = 231,866.19

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.