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Finding the Third Proportional to 69,729.75 and 105,249.75

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Solution

The third proportional to 69,729.75 and 105,249.75 is: 158,863.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,729.75 : 105,249.75 = 105,249.75 : x
  2. Step 2: Convert to fraction form
    69,729.75/105,249.75 = 105,249.75/x
  3. Step 3: Cross multiply
    69,729.75x = 105,249.75 × 105,249.75
  4. Step 4: Simplify right side
    69,729.75x = 11,077,509,875.06
  5. Step 5: Solve for x
    x = 11,077,509,875.06/69,729.75
  6. Step 6: Final answer
    x = 158,863.47

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.