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Finding the Third Proportional to 64,634 and 136,718

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Solution

The third proportional to 64,634 and 136,718 is: 289,194.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,634 : 136,718 = 136,718 : x
  2. Step 2: Convert to fraction form
    64,634/136,718 = 136,718/x
  3. Step 3: Cross multiply
    64,634x = 136,718 × 136,718
  4. Step 4: Simplify right side
    64,634x = 18,691,811,524
  5. Step 5: Solve for x
    x = 18,691,811,524/64,634
  6. Step 6: Final answer
    x = 289,194.72

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.