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Finding the Third Proportional to 100,485 and 155,521

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Solution

The third proportional to 100,485 and 155,521 is: 240,700.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,485 : 155,521 = 155,521 : x
  2. Step 2: Convert to fraction form
    100,485/155,521 = 155,521/x
  3. Step 3: Cross multiply
    100,485x = 155,521 × 155,521
  4. Step 4: Simplify right side
    100,485x = 24,186,781,441
  5. Step 5: Solve for x
    x = 24,186,781,441/100,485
  6. Step 6: Final answer
    x = 240,700.42

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.