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Finding the Third Proportional to 115,410.75 and 172,655

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Solution

The third proportional to 115,410.75 and 172,655 is: 258,292.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,410.75 : 172,655 = 172,655 : x
  2. Step 2: Convert to fraction form
    115,410.75/172,655 = 172,655/x
  3. Step 3: Cross multiply
    115,410.75x = 172,655 × 172,655
  4. Step 4: Simplify right side
    115,410.75x = 29,809,749,025
  5. Step 5: Solve for x
    x = 29,809,749,025/115,410.75
  6. Step 6: Final answer
    x = 258,292.65

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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.