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Finding the Third Proportional to 115,462 and 172,729

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Solution

The third proportional to 115,462 and 172,729 is: 258,399.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,462 : 172,729 = 172,729 : x
  2. Step 2: Convert to fraction form
    115,462/172,729 = 172,729/x
  3. Step 3: Cross multiply
    115,462x = 172,729 × 172,729
  4. Step 4: Simplify right side
    115,462x = 29,835,307,441
  5. Step 5: Solve for x
    x = 29,835,307,441/115,462
  6. Step 6: Final answer
    x = 258,399.36

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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.