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Finding the Fourth Proportional to 100,736.28, 150,812.46 and 75,880.98

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Solution

The fourth proportional to 100,736.28, 150,812.46 and 75,880.98 is: 113,601.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,736.28 : 150,812.46 = 75,880.98 : x
  2. Step 2: Convert to fraction form
    100,736.28/150,812.46 = 75,880.98/x
  3. Step 3: Cross multiply
    100,736.28x = 150,812.46 × 75,880.98
  4. Step 4: Simplify right side
    100,736.28x = 11,443,797,261.01
  5. Step 5: Solve for x
    x = 11,443,797,261.01/100,736.28
  6. Step 6: Final answer
    x = 113,601.55

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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.