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Finding the Third Proportional to 64,641 and 135,138

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Solution

The third proportional to 64,641 and 135,138 is: 282,518.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,641 : 135,138 = 135,138 : x
  2. Step 2: Convert to fraction form
    64,641/135,138 = 135,138/x
  3. Step 3: Cross multiply
    64,641x = 135,138 × 135,138
  4. Step 4: Simplify right side
    64,641x = 18,262,279,044
  5. Step 5: Solve for x
    x = 18,262,279,044/64,641
  6. Step 6: Final answer
    x = 282,518.51

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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.