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Finding the Third Proportional to 86,909 and 134,353.50

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Solution

The third proportional to 86,909 and 134,353.50 is: 207,698.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,909 : 134,353.50 = 134,353.50 : x
  2. Step 2: Convert to fraction form
    86,909/134,353.50 = 134,353.50/x
  3. Step 3: Cross multiply
    86,909x = 134,353.50 × 134,353.50
  4. Step 4: Simplify right side
    86,909x = 18,050,862,962.25
  5. Step 5: Solve for x
    x = 18,050,862,962.25/86,909
  6. Step 6: Final answer
    x = 207,698.43

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.