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Finding the Third Proportional to 100,391 and 133,836.50

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Solution

The third proportional to 100,391 and 133,836.50 is: 178,424.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,391 : 133,836.50 = 133,836.50 : x
  2. Step 2: Convert to fraction form
    100,391/133,836.50 = 133,836.50/x
  3. Step 3: Cross multiply
    100,391x = 133,836.50 × 133,836.50
  4. Step 4: Simplify right side
    100,391x = 17,912,208,732.25
  5. Step 5: Solve for x
    x = 17,912,208,732.25/100,391
  6. Step 6: Final answer
    x = 178,424.45

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.