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Finding the Third Proportional to 129,120 and 188,544

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Solution

The third proportional to 129,120 and 188,544 is: 275,316.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,120 : 188,544 = 188,544 : x
  2. Step 2: Convert to fraction form
    129,120/188,544 = 188,544/x
  3. Step 3: Cross multiply
    129,120x = 188,544 × 188,544
  4. Step 4: Simplify right side
    129,120x = 35,548,839,936
  5. Step 5: Solve for x
    x = 35,548,839,936/129,120
  6. Step 6: Final answer
    x = 275,316.29

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.