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Finding the Fourth Proportional to 188,921.70, 283,710.60 and 100,348.20

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Solution

The fourth proportional to 188,921.70, 283,710.60 and 100,348.20 is: 150,696.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,921.70 : 283,710.60 = 100,348.20 : x
  2. Step 2: Convert to fraction form
    188,921.70/283,710.60 = 100,348.20/x
  3. Step 3: Cross multiply
    188,921.70x = 283,710.60 × 100,348.20
  4. Step 4: Simplify right side
    188,921.70x = 28,469,848,030.92
  5. Step 5: Solve for x
    x = 28,469,848,030.92/188,921.70
  6. Step 6: Final answer
    x = 150,696.55

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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.