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Finding the Third Proportional to 64,638 and 135,132

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Solution

The third proportional to 64,638 and 135,132 is: 282,506.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,638 : 135,132 = 135,132 : x
  2. Step 2: Convert to fraction form
    64,638/135,132 = 135,132/x
  3. Step 3: Cross multiply
    64,638x = 135,132 × 135,132
  4. Step 4: Simplify right side
    64,638x = 18,260,657,424
  5. Step 5: Solve for x
    x = 18,260,657,424/64,638
  6. Step 6: Final answer
    x = 282,506.54

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.