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Finding the Third Proportional to 74,085 and 105,866

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Solution

The third proportional to 74,085 and 105,866 is: 151,280.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,085 : 105,866 = 105,866 : x
  2. Step 2: Convert to fraction form
    74,085/105,866 = 105,866/x
  3. Step 3: Cross multiply
    74,085x = 105,866 × 105,866
  4. Step 4: Simplify right side
    74,085x = 11,207,609,956
  5. Step 5: Solve for x
    x = 11,207,609,956/74,085
  6. Step 6: Final answer
    x = 151,280.42

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.