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Finding the Fourth Proportional to 143,791.64, 215,688 and 43,951.44

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Solution

The fourth proportional to 143,791.64, 215,688 and 43,951.44 is: 65,927.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,791.64 : 215,688 = 43,951.44 : x
  2. Step 2: Convert to fraction form
    143,791.64/215,688 = 43,951.44/x
  3. Step 3: Cross multiply
    143,791.64x = 215,688 × 43,951.44
  4. Step 4: Simplify right side
    143,791.64x = 9,479,798,190.72
  5. Step 5: Solve for x
    x = 9,479,798,190.72/143,791.64
  6. Step 6: Final answer
    x = 65,927.33

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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.