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Finding the Fourth Proportional to 188,752.70, 283,158.20 and 68,819.78

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Solution

The fourth proportional to 188,752.70, 283,158.20 and 68,819.78 is: 103,240.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,752.70 : 283,158.20 = 68,819.78 : x
  2. Step 2: Convert to fraction form
    188,752.70/283,158.20 = 68,819.78/x
  3. Step 3: Cross multiply
    188,752.70x = 283,158.20 × 68,819.78
  4. Step 4: Simplify right side
    188,752.70x = 19,486,883,785.45
  5. Step 5: Solve for x
    x = 19,486,883,785.45/188,752.70
  6. Step 6: Final answer
    x = 103,240.29

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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.