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Finding the Third Proportional to 100,936.13 and 212,329.69

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Solution

The third proportional to 100,936.13 and 212,329.69 is: 446,657.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,936.13 : 212,329.69 = 212,329.69 : x
  2. Step 2: Convert to fraction form
    100,936.13/212,329.69 = 212,329.69/x
  3. Step 3: Cross multiply
    100,936.13x = 212,329.69 × 212,329.69
  4. Step 4: Simplify right side
    100,936.13x = 45,083,896,193.85
  5. Step 5: Solve for x
    x = 45,083,896,193.85/100,936.13
  6. Step 6: Final answer
    x = 446,657.69

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.