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Finding the Fourth Proportional to 203,974.64, 305,793.48 and 90,041.32

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Solution

The fourth proportional to 203,974.64, 305,793.48 and 90,041.32 is: 134,987.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,974.64 : 305,793.48 = 90,041.32 : x
  2. Step 2: Convert to fraction form
    203,974.64/305,793.48 = 90,041.32/x
  3. Step 3: Cross multiply
    203,974.64x = 305,793.48 × 90,041.32
  4. Step 4: Simplify right side
    203,974.64x = 27,534,048,586.59
  5. Step 5: Solve for x
    x = 27,534,048,586.59/203,974.64
  6. Step 6: Final answer
    x = 134,987.61

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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.