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Finding the Third Proportional to 100,475 and 140,479

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Solution

The third proportional to 100,475 and 140,479 is: 196,410.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,475 : 140,479 = 140,479 : x
  2. Step 2: Convert to fraction form
    100,475/140,479 = 140,479/x
  3. Step 3: Cross multiply
    100,475x = 140,479 × 140,479
  4. Step 4: Simplify right side
    100,475x = 19,734,349,441
  5. Step 5: Solve for x
    x = 19,734,349,441/100,475
  6. Step 6: Final answer
    x = 196,410.54

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.