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Finding the Fourth Proportional to 100,120.79, 150,157.46 and 36,906.57

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Solution

The fourth proportional to 100,120.79, 150,157.46 and 36,906.57 is: 55,351.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,120.79 : 150,157.46 = 36,906.57 : x
  2. Step 2: Convert to fraction form
    100,120.79/150,157.46 = 36,906.57/x
  3. Step 3: Cross multiply
    100,120.79x = 150,157.46 × 36,906.57
  4. Step 4: Simplify right side
    100,120.79x = 5,541,796,900.78
  5. Step 5: Solve for x
    x = 5,541,796,900.78/100,120.79
  6. Step 6: Final answer
    x = 55,351.11

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1.5x scale

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.