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Finding the Fourth Proportional to 101,850.72, 140,583.96 and 66,042.96

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Solution

The fourth proportional to 101,850.72, 140,583.96 and 66,042.96 is: 91,158.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,850.72 : 140,583.96 = 66,042.96 : x
  2. Step 2: Convert to fraction form
    101,850.72/140,583.96 = 66,042.96/x
  3. Step 3: Cross multiply
    101,850.72x = 140,583.96 × 66,042.96
  4. Step 4: Simplify right side
    101,850.72x = 9,284,580,846.92
  5. Step 5: Solve for x
    x = 9,284,580,846.92/101,850.72
  6. Step 6: Final answer
    x = 91,158.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.