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Finding the Fourth Proportional to 138,793.58, 208,189.64 and 33,612.54

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Solution

The fourth proportional to 138,793.58, 208,189.64 and 33,612.54 is: 50,418.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,793.58 : 208,189.64 = 33,612.54 : x
  2. Step 2: Convert to fraction form
    138,793.58/208,189.64 = 33,612.54/x
  3. Step 3: Cross multiply
    138,793.58x = 208,189.64 × 33,612.54
  4. Step 4: Simplify right side
    138,793.58x = 6,997,782,434.02
  5. Step 5: Solve for x
    x = 6,997,782,434.02/138,793.58
  6. Step 6: Final answer
    x = 50,418.63

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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.