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Finding the Third Proportional to 86,256 and 130,939

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Solution

The third proportional to 86,256 and 130,939 is: 198,769.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,256 : 130,939 = 130,939 : x
  2. Step 2: Convert to fraction form
    86,256/130,939 = 130,939/x
  3. Step 3: Cross multiply
    86,256x = 130,939 × 130,939
  4. Step 4: Simplify right side
    86,256x = 17,145,021,721
  5. Step 5: Solve for x
    x = 17,145,021,721/86,256
  6. Step 6: Final answer
    x = 198,769.03

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.