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Finding the Third Proportional to 77,884 and 121,533

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Solution

The third proportional to 77,884 and 121,533 is: 189,644.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,884 : 121,533 = 121,533 : x
  2. Step 2: Convert to fraction form
    77,884/121,533 = 121,533/x
  3. Step 3: Cross multiply
    77,884x = 121,533 × 121,533
  4. Step 4: Simplify right side
    77,884x = 14,770,270,089
  5. Step 5: Solve for x
    x = 14,770,270,089/77,884
  6. Step 6: Final answer
    x = 189,644.47

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.