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Finding the Third Proportional to 66,578 and 144,912

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Solution

The third proportional to 66,578 and 144,912 is: 315,411.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,578 : 144,912 = 144,912 : x
  2. Step 2: Convert to fraction form
    66,578/144,912 = 144,912/x
  3. Step 3: Cross multiply
    66,578x = 144,912 × 144,912
  4. Step 4: Simplify right side
    66,578x = 20,999,487,744
  5. Step 5: Solve for x
    x = 20,999,487,744/66,578
  6. Step 6: Final answer
    x = 315,411.81

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.