Home / 203,621.85-305,310.06-91,281.74

Finding the Fourth Proportional to 203,621.85, 305,310.06 and 91,281.74

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Solution

The fourth proportional to 203,621.85, 305,310.06 and 91,281.74 is: 136,867.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,621.85 : 305,310.06 = 91,281.74 : x
  2. Step 2: Convert to fraction form
    203,621.85/305,310.06 = 91,281.74/x
  3. Step 3: Cross multiply
    203,621.85x = 305,310.06 × 91,281.74
  4. Step 4: Simplify right side
    203,621.85x = 27,869,231,989.75
  5. Step 5: Solve for x
    x = 27,869,231,989.75/203,621.85
  6. Step 6: Final answer
    x = 136,867.59

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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.