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Finding the Third Proportional to 100,000 and 145,320

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Solution

The third proportional to 100,000 and 145,320 is: 211,179.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,000 : 145,320 = 145,320 : x
  2. Step 2: Convert to fraction form
    100,000/145,320 = 145,320/x
  3. Step 3: Cross multiply
    100,000x = 145,320 × 145,320
  4. Step 4: Simplify right side
    100,000x = 21,117,902,400
  5. Step 5: Solve for x
    x = 21,117,902,400/100,000
  6. Step 6: Final answer
    x = 211,179.02

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.