Home / 203,381.64-305,084.07-68,391.54

Finding the Fourth Proportional to 203,381.64, 305,084.07 and 68,391.54

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Solution

The fourth proportional to 203,381.64, 305,084.07 and 68,391.54 is: 102,591.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,381.64 : 305,084.07 = 68,391.54 : x
  2. Step 2: Convert to fraction form
    203,381.64/305,084.07 = 68,391.54/x
  3. Step 3: Cross multiply
    203,381.64x = 305,084.07 × 68,391.54
  4. Step 4: Simplify right side
    203,381.64x = 20,865,169,376.77
  5. Step 5: Solve for x
    x = 20,865,169,376.77/203,381.64
  6. Step 6: Final answer
    x = 102,591.21

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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.