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Finding the Third Proportional to 143,268.75 and 155,555.44

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Solution

The third proportional to 143,268.75 and 155,555.44 is: 168,895.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,268.75 : 155,555.44 = 155,555.44 : x
  2. Step 2: Convert to fraction form
    143,268.75/155,555.44 = 155,555.44/x
  3. Step 3: Cross multiply
    143,268.75x = 155,555.44 × 155,555.44
  4. Step 4: Simplify right side
    143,268.75x = 24,197,494,135.82
  5. Step 5: Solve for x
    x = 24,197,494,135.82/143,268.75
  6. Step 6: Final answer
    x = 168,895.83

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.