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Finding the Third Proportional to 86,078 and 186,450

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Solution

The third proportional to 86,078 and 186,450 is: 403,861.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,078 : 186,450 = 186,450 : x
  2. Step 2: Convert to fraction form
    86,078/186,450 = 186,450/x
  3. Step 3: Cross multiply
    86,078x = 186,450 × 186,450
  4. Step 4: Simplify right side
    86,078x = 34,763,602,500
  5. Step 5: Solve for x
    x = 34,763,602,500/86,078
  6. Step 6: Final answer
    x = 403,861.64

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.