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Finding the Third Proportional to 66,809 and 147,010

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Solution

The third proportional to 66,809 and 147,010 is: 323,488.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,809 : 147,010 = 147,010 : x
  2. Step 2: Convert to fraction form
    66,809/147,010 = 147,010/x
  3. Step 3: Cross multiply
    66,809x = 147,010 × 147,010
  4. Step 4: Simplify right side
    66,809x = 21,611,940,100
  5. Step 5: Solve for x
    x = 21,611,940,100/66,809
  6. Step 6: Final answer
    x = 323,488.45

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.