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Finding the Fourth Proportional to 203,937.68, 305,738.04 and 90,004.34

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Solution

The fourth proportional to 203,937.68, 305,738.04 and 90,004.34 is: 134,932.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,937.68 : 305,738.04 = 90,004.34 : x
  2. Step 2: Convert to fraction form
    203,937.68/305,738.04 = 90,004.34/x
  3. Step 3: Cross multiply
    203,937.68x = 305,738.04 × 90,004.34
  4. Step 4: Simplify right side
    203,937.68x = 27,517,750,503.09
  5. Step 5: Solve for x
    x = 27,517,750,503.09/203,937.68
  6. Step 6: Final answer
    x = 134,932.15

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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.