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Finding the Third Proportional to 66,144 and 144,707

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Solution

The third proportional to 66,144 and 144,707 is: 316,583.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,144 : 144,707 = 144,707 : x
  2. Step 2: Convert to fraction form
    66,144/144,707 = 144,707/x
  3. Step 3: Cross multiply
    66,144x = 144,707 × 144,707
  4. Step 4: Simplify right side
    66,144x = 20,940,115,849
  5. Step 5: Solve for x
    x = 20,940,115,849/66,144
  6. Step 6: Final answer
    x = 316,583.75

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.