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Finding the Third Proportional to 81,444 and 114,690

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Solution

The third proportional to 81,444 and 114,690 is: 161,507.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,444 : 114,690 = 114,690 : x
  2. Step 2: Convert to fraction form
    81,444/114,690 = 114,690/x
  3. Step 3: Cross multiply
    81,444x = 114,690 × 114,690
  4. Step 4: Simplify right side
    81,444x = 13,153,796,100
  5. Step 5: Solve for x
    x = 13,153,796,100/81,444
  6. Step 6: Final answer
    x = 161,507.25

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.