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Finding the Third Proportional to 85,327 and 117,621

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Solution

The third proportional to 85,327 and 117,621 is: 162,137.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,327 : 117,621 = 117,621 : x
  2. Step 2: Convert to fraction form
    85,327/117,621 = 117,621/x
  3. Step 3: Cross multiply
    85,327x = 117,621 × 117,621
  4. Step 4: Simplify right side
    85,327x = 13,834,699,641
  5. Step 5: Solve for x
    x = 13,834,699,641/85,327
  6. Step 6: Final answer
    x = 162,137.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.