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Finding the Third Proportional to 69,191 and 103,787

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Solution

The third proportional to 69,191 and 103,787 is: 155,681.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,191 : 103,787 = 103,787 : x
  2. Step 2: Convert to fraction form
    69,191/103,787 = 103,787/x
  3. Step 3: Cross multiply
    69,191x = 103,787 × 103,787
  4. Step 4: Simplify right side
    69,191x = 10,771,741,369
  5. Step 5: Solve for x
    x = 10,771,741,369/69,191
  6. Step 6: Final answer
    x = 155,681.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.