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Finding the Third Proportional to 66,760 and 144,536

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Solution

The third proportional to 66,760 and 144,536 is: 312,921.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,760 : 144,536 = 144,536 : x
  2. Step 2: Convert to fraction form
    66,760/144,536 = 144,536/x
  3. Step 3: Cross multiply
    66,760x = 144,536 × 144,536
  4. Step 4: Simplify right side
    66,760x = 20,890,655,296
  5. Step 5: Solve for x
    x = 20,890,655,296/66,760
  6. Step 6: Final answer
    x = 312,921.74

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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.