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Finding the Third Proportional to 115,439.50 and 172,694.50

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Solution

The third proportional to 115,439.50 and 172,694.50 is: 258,346.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,439.50 : 172,694.50 = 172,694.50 : x
  2. Step 2: Convert to fraction form
    115,439.50/172,694.50 = 172,694.50/x
  3. Step 3: Cross multiply
    115,439.50x = 172,694.50 × 172,694.50
  4. Step 4: Simplify right side
    115,439.50x = 29,823,390,330.25
  5. Step 5: Solve for x
    x = 29,823,390,330.25/115,439.50
  6. Step 6: Final answer
    x = 258,346.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.