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Finding the Third Proportional to 66,688 and 144,512

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Solution

The third proportional to 66,688 and 144,512 is: 313,155.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,688 : 144,512 = 144,512 : x
  2. Step 2: Convert to fraction form
    66,688/144,512 = 144,512/x
  3. Step 3: Cross multiply
    66,688x = 144,512 × 144,512
  4. Step 4: Simplify right side
    66,688x = 20,883,718,144
  5. Step 5: Solve for x
    x = 20,883,718,144/66,688
  6. Step 6: Final answer
    x = 313,155.56

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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.