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Finding the Third Proportional to 66,312 and 146,772

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Solution

The third proportional to 66,312 and 146,772 is: 324,858.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,312 : 146,772 = 146,772 : x
  2. Step 2: Convert to fraction form
    66,312/146,772 = 146,772/x
  3. Step 3: Cross multiply
    66,312x = 146,772 × 146,772
  4. Step 4: Simplify right side
    66,312x = 21,542,019,984
  5. Step 5: Solve for x
    x = 21,542,019,984/66,312
  6. Step 6: Final answer
    x = 324,858.55

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.