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Finding the Fourth Proportional to 135,978.35, 203,759.75 and 57,049.52

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Solution

The fourth proportional to 135,978.35, 203,759.75 and 57,049.52 is: 85,487.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,978.35 : 203,759.75 = 57,049.52 : x
  2. Step 2: Convert to fraction form
    135,978.35/203,759.75 = 57,049.52/x
  3. Step 3: Cross multiply
    135,978.35x = 203,759.75 × 57,049.52
  4. Step 4: Simplify right side
    135,978.35x = 11,624,395,056.65
  5. Step 5: Solve for x
    x = 11,624,395,056.65/135,978.35
  6. Step 6: Final answer
    x = 85,487.10

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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.