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Finding the Third Proportional to 81,631.50 and 124,863.75

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Solution

The third proportional to 81,631.50 and 124,863.75 is: 190,991.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,631.50 : 124,863.75 = 124,863.75 : x
  2. Step 2: Convert to fraction form
    81,631.50/124,863.75 = 124,863.75/x
  3. Step 3: Cross multiply
    81,631.50x = 124,863.75 × 124,863.75
  4. Step 4: Simplify right side
    81,631.50x = 15,590,956,064.06
  5. Step 5: Solve for x
    x = 15,590,956,064.06/81,631.50
  6. Step 6: Final answer
    x = 190,991.91

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.