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Finding the Fourth Proportional to 150,809.46, 208,057.41 and 87,135.54

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Solution

The fourth proportional to 150,809.46, 208,057.41 and 87,135.54 is: 120,212.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,809.46 : 208,057.41 = 87,135.54 : x
  2. Step 2: Convert to fraction form
    150,809.46/208,057.41 = 87,135.54/x
  3. Step 3: Cross multiply
    150,809.46x = 208,057.41 × 87,135.54
  4. Step 4: Simplify right side
    150,809.46x = 18,129,194,771.35
  5. Step 5: Solve for x
    x = 18,129,194,771.35/150,809.46
  6. Step 6: Final answer
    x = 120,212.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.