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Finding the Third Proportional to 106,272 and 165,240

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Solution

The third proportional to 106,272 and 165,240 is: 256,928.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,272 : 165,240 = 165,240 : x
  2. Step 2: Convert to fraction form
    106,272/165,240 = 165,240/x
  3. Step 3: Cross multiply
    106,272x = 165,240 × 165,240
  4. Step 4: Simplify right side
    106,272x = 27,304,257,600
  5. Step 5: Solve for x
    x = 27,304,257,600/106,272
  6. Step 6: Final answer
    x = 256,928.05

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.