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Finding the Fourth Proportional to 203,019.75, 280,102.83 and 118,120.41

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Solution

The fourth proportional to 203,019.75, 280,102.83 and 118,120.41 is: 162,968.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,019.75 : 280,102.83 = 118,120.41 : x
  2. Step 2: Convert to fraction form
    203,019.75/280,102.83 = 118,120.41/x
  3. Step 3: Cross multiply
    203,019.75x = 280,102.83 × 118,120.41
  4. Step 4: Simplify right side
    203,019.75x = 33,085,861,121.76
  5. Step 5: Solve for x
    x = 33,085,861,121.76/203,019.75
  6. Step 6: Final answer
    x = 162,968.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.