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Finding the Third Proportional to 128,865 and 193,536

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Solution

The third proportional to 128,865 and 193,536 is: 290,662.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,865 : 193,536 = 193,536 : x
  2. Step 2: Convert to fraction form
    128,865/193,536 = 193,536/x
  3. Step 3: Cross multiply
    128,865x = 193,536 × 193,536
  4. Step 4: Simplify right side
    128,865x = 37,456,183,296
  5. Step 5: Solve for x
    x = 37,456,183,296/128,865
  6. Step 6: Final answer
    x = 290,662.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.