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Finding the Fourth Proportional to 143,786.88, 215,689.50 and 43,950.60

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Solution

The fourth proportional to 143,786.88, 215,689.50 and 43,950.60 is: 65,928.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,786.88 : 215,689.50 = 43,950.60 : x
  2. Step 2: Convert to fraction form
    143,786.88/215,689.50 = 43,950.60/x
  3. Step 3: Cross multiply
    143,786.88x = 215,689.50 × 43,950.60
  4. Step 4: Simplify right side
    143,786.88x = 9,479,682,938.70
  5. Step 5: Solve for x
    x = 9,479,682,938.70/143,786.88
  6. Step 6: Final answer
    x = 65,928.71

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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.