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Finding the Third Proportional to 66,476 and 142,696

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Solution

The third proportional to 66,476 and 142,696 is: 306,308.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,476 : 142,696 = 142,696 : x
  2. Step 2: Convert to fraction form
    66,476/142,696 = 142,696/x
  3. Step 3: Cross multiply
    66,476x = 142,696 × 142,696
  4. Step 4: Simplify right side
    66,476x = 20,362,148,416
  5. Step 5: Solve for x
    x = 20,362,148,416/66,476
  6. Step 6: Final answer
    x = 306,308.27

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.