Home / 203,868.34-305,778.74-54,120.26

Finding the Fourth Proportional to 203,868.34, 305,778.74 and 54,120.26

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Solution

The fourth proportional to 203,868.34, 305,778.74 and 54,120.26 is: 81,174.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,868.34 : 305,778.74 = 54,120.26 : x
  2. Step 2: Convert to fraction form
    203,868.34/305,778.74 = 54,120.26/x
  3. Step 3: Cross multiply
    203,868.34x = 305,778.74 × 54,120.26
  4. Step 4: Simplify right side
    203,868.34x = 16,548,825,405.12
  5. Step 5: Solve for x
    x = 16,548,825,405.12/203,868.34
  6. Step 6: Final answer
    x = 81,174.08

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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.