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Finding the Fourth Proportional to 100,671.65, 150,843.45 and 74,099.60

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Solution

The fourth proportional to 100,671.65, 150,843.45 and 74,099.60 is: 111,028.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,671.65 : 150,843.45 = 74,099.60 : x
  2. Step 2: Convert to fraction form
    100,671.65/150,843.45 = 74,099.60/x
  3. Step 3: Cross multiply
    100,671.65x = 150,843.45 × 74,099.60
  4. Step 4: Simplify right side
    100,671.65x = 11,177,439,307.62
  5. Step 5: Solve for x
    x = 11,177,439,307.62/100,671.65
  6. Step 6: Final answer
    x = 111,028.67

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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.