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Finding the Third Proportional to 66,904 and 144,020

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Solution

The third proportional to 66,904 and 144,020 is: 310,022.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,904 : 144,020 = 144,020 : x
  2. Step 2: Convert to fraction form
    66,904/144,020 = 144,020/x
  3. Step 3: Cross multiply
    66,904x = 144,020 × 144,020
  4. Step 4: Simplify right side
    66,904x = 20,741,760,400
  5. Step 5: Solve for x
    x = 20,741,760,400/66,904
  6. Step 6: Final answer
    x = 310,022.73

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.