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Finding the Third Proportional to 63,219 and 135,809

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Solution

The third proportional to 63,219 and 135,809 is: 291,749.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,219 : 135,809 = 135,809 : x
  2. Step 2: Convert to fraction form
    63,219/135,809 = 135,809/x
  3. Step 3: Cross multiply
    63,219x = 135,809 × 135,809
  4. Step 4: Simplify right side
    63,219x = 18,444,084,481
  5. Step 5: Solve for x
    x = 18,444,084,481/63,219
  6. Step 6: Final answer
    x = 291,749.07

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.