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Finding the Third Proportional to 61,620 and 133,600

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Solution

The third proportional to 61,620 and 133,600 is: 289,661.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,620 : 133,600 = 133,600 : x
  2. Step 2: Convert to fraction form
    61,620/133,600 = 133,600/x
  3. Step 3: Cross multiply
    61,620x = 133,600 × 133,600
  4. Step 4: Simplify right side
    61,620x = 17,848,960,000
  5. Step 5: Solve for x
    x = 17,848,960,000/61,620
  6. Step 6: Final answer
    x = 289,661.80

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.