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Finding the Third Proportional to 86,804 and 135,281

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Solution

The third proportional to 86,804 and 135,281 is: 210,830.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,804 : 135,281 = 135,281 : x
  2. Step 2: Convert to fraction form
    86,804/135,281 = 135,281/x
  3. Step 3: Cross multiply
    86,804x = 135,281 × 135,281
  4. Step 4: Simplify right side
    86,804x = 18,300,948,961
  5. Step 5: Solve for x
    x = 18,300,948,961/86,804
  6. Step 6: Final answer
    x = 210,830.71

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.