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Finding the Third Proportional to 66,520 and 144,680

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Solution

The third proportional to 66,520 and 144,680 is: 314,676.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,520 : 144,680 = 144,680 : x
  2. Step 2: Convert to fraction form
    66,520/144,680 = 144,680/x
  3. Step 3: Cross multiply
    66,520x = 144,680 × 144,680
  4. Step 4: Simplify right side
    66,520x = 20,932,302,400
  5. Step 5: Solve for x
    x = 20,932,302,400/66,520
  6. Step 6: Final answer
    x = 314,676.83

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.