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Finding the Third Proportional to 72,212 and 168,723

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Solution

The third proportional to 72,212 and 168,723 is: 394,220.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,212 : 168,723 = 168,723 : x
  2. Step 2: Convert to fraction form
    72,212/168,723 = 168,723/x
  3. Step 3: Cross multiply
    72,212x = 168,723 × 168,723
  4. Step 4: Simplify right side
    72,212x = 28,467,450,729
  5. Step 5: Solve for x
    x = 28,467,450,729/72,212
  6. Step 6: Final answer
    x = 394,220.50

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Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.