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Finding the Third Proportional to 64,395 and 100,521

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Solution

The third proportional to 64,395 and 100,521 is: 156,913.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,395 : 100,521 = 100,521 : x
  2. Step 2: Convert to fraction form
    64,395/100,521 = 100,521/x
  3. Step 3: Cross multiply
    64,395x = 100,521 × 100,521
  4. Step 4: Simplify right side
    64,395x = 10,104,471,441
  5. Step 5: Solve for x
    x = 10,104,471,441/64,395
  6. Step 6: Final answer
    x = 156,913.91

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.