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Finding the Third Proportional to 64,960 and 100,320

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Solution

The third proportional to 64,960 and 100,320 is: 154,927.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,960 : 100,320 = 100,320 : x
  2. Step 2: Convert to fraction form
    64,960/100,320 = 100,320/x
  3. Step 3: Cross multiply
    64,960x = 100,320 × 100,320
  4. Step 4: Simplify right side
    64,960x = 10,064,102,400
  5. Step 5: Solve for x
    x = 10,064,102,400/64,960
  6. Step 6: Final answer
    x = 154,927.68

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.