Home / 203,955.20-305,814-79,150.40

Finding the Fourth Proportional to 203,955.20, 305,814 and 79,150.40

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Solution

The fourth proportional to 203,955.20, 305,814 and 79,150.40 is: 118,679.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,955.20 : 305,814 = 79,150.40 : x
  2. Step 2: Convert to fraction form
    203,955.20/305,814 = 79,150.40/x
  3. Step 3: Cross multiply
    203,955.20x = 305,814 × 79,150.40
  4. Step 4: Simplify right side
    203,955.20x = 24,205,300,425.60
  5. Step 5: Solve for x
    x = 24,205,300,425.60/203,955.20
  6. Step 6: Final answer
    x = 118,679.50

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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.