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Finding the Fourth Proportional to 143,003.68, 214,507.68 and 68,131.60

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Solution

The fourth proportional to 143,003.68, 214,507.68 and 68,131.60 is: 102,198.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,003.68 : 214,507.68 = 68,131.60 : x
  2. Step 2: Convert to fraction form
    143,003.68/214,507.68 = 68,131.60/x
  3. Step 3: Cross multiply
    143,003.68x = 214,507.68 × 68,131.60
  4. Step 4: Simplify right side
    143,003.68x = 14,614,751,450.69
  5. Step 5: Solve for x
    x = 14,614,751,450.69/143,003.68
  6. Step 6: Final answer
    x = 102,198.43

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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.