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Finding the Fourth Proportional to 135,940.36, 203,989.52 and 55,986.37

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Solution

The fourth proportional to 135,940.36, 203,989.52 and 55,986.37 is: 84,012.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,940.36 : 203,989.52 = 55,986.37 : x
  2. Step 2: Convert to fraction form
    135,940.36/203,989.52 = 55,986.37/x
  3. Step 3: Cross multiply
    135,940.36x = 203,989.52 × 55,986.37
  4. Step 4: Simplify right side
    135,940.36x = 11,420,631,442.96
  5. Step 5: Solve for x
    x = 11,420,631,442.96/135,940.36
  6. Step 6: Final answer
    x = 84,012.08

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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.