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Finding the Fourth Proportional to 188,909.70, 283,692.60 and 100,336.20

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Solution

The fourth proportional to 188,909.70, 283,692.60 and 100,336.20 is: 150,678.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,909.70 : 283,692.60 = 100,336.20 : x
  2. Step 2: Convert to fraction form
    188,909.70/283,692.60 = 100,336.20/x
  3. Step 3: Cross multiply
    188,909.70x = 283,692.60 × 100,336.20
  4. Step 4: Simplify right side
    188,909.70x = 28,464,637,452.12
  5. Step 5: Solve for x
    x = 28,464,637,452.12/188,909.70
  6. Step 6: Final answer
    x = 150,678.54

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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.