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Finding the Third Proportional to 86,751 and 127,939.50

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Solution

The third proportional to 86,751 and 127,939.50 is: 188,683.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,751 : 127,939.50 = 127,939.50 : x
  2. Step 2: Convert to fraction form
    86,751/127,939.50 = 127,939.50/x
  3. Step 3: Cross multiply
    86,751x = 127,939.50 × 127,939.50
  4. Step 4: Simplify right side
    86,751x = 16,368,515,660.25
  5. Step 5: Solve for x
    x = 16,368,515,660.25/86,751
  6. Step 6: Final answer
    x = 188,683.88

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.