Home / 203,627.85-305,319.06-91,287.75

Finding the Fourth Proportional to 203,627.85, 305,319.06 and 91,287.75

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Solution

The fourth proportional to 203,627.85, 305,319.06 and 91,287.75 is: 136,876.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,627.85 : 305,319.06 = 91,287.75 : x
  2. Step 2: Convert to fraction form
    203,627.85/305,319.06 = 91,287.75/x
  3. Step 3: Cross multiply
    203,627.85x = 305,319.06 × 91,287.75
  4. Step 4: Simplify right side
    203,627.85x = 27,871,890,019.52
  5. Step 5: Solve for x
    x = 27,871,890,019.52/203,627.85
  6. Step 6: Final answer
    x = 136,876.61

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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.