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Finding the Third Proportional to 110,689 and 155,320

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Solution

The third proportional to 110,689 and 155,320 is: 217,946.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,689 : 155,320 = 155,320 : x
  2. Step 2: Convert to fraction form
    110,689/155,320 = 155,320/x
  3. Step 3: Cross multiply
    110,689x = 155,320 × 155,320
  4. Step 4: Simplify right side
    110,689x = 24,124,302,400
  5. Step 5: Solve for x
    x = 24,124,302,400/110,689
  6. Step 6: Final answer
    x = 217,946.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.