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Finding the Third Proportional to 85,856 and 186,485

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Solution

The third proportional to 85,856 and 186,485 is: 405,057.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,856 : 186,485 = 186,485 : x
  2. Step 2: Convert to fraction form
    85,856/186,485 = 186,485/x
  3. Step 3: Cross multiply
    85,856x = 186,485 × 186,485
  4. Step 4: Simplify right side
    85,856x = 34,776,655,225
  5. Step 5: Solve for x
    x = 34,776,655,225/85,856
  6. Step 6: Final answer
    x = 405,057.95

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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.