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Finding the Third Proportional to 72,357 and 108,399

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Solution

The third proportional to 72,357 and 108,399 is: 162,394.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,357 : 108,399 = 108,399 : x
  2. Step 2: Convert to fraction form
    72,357/108,399 = 108,399/x
  3. Step 3: Cross multiply
    72,357x = 108,399 × 108,399
  4. Step 4: Simplify right side
    72,357x = 11,750,343,201
  5. Step 5: Solve for x
    x = 11,750,343,201/72,357
  6. Step 6: Final answer
    x = 162,394.01

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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.