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Finding the Fourth Proportional to 143,762.91, 215,676.09 and 43,930.89

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Solution

The fourth proportional to 143,762.91, 215,676.09 and 43,930.89 is: 65,906.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,762.91 : 215,676.09 = 43,930.89 : x
  2. Step 2: Convert to fraction form
    143,762.91/215,676.09 = 43,930.89/x
  3. Step 3: Cross multiply
    143,762.91x = 215,676.09 × 43,930.89
  4. Step 4: Simplify right side
    143,762.91x = 9,474,843,069.15
  5. Step 5: Solve for x
    x = 9,474,843,069.15/143,762.91
  6. Step 6: Final answer
    x = 65,906.03

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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.