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Finding the Fourth Proportional to 180,520.88, 270,936.84 and 87,105.20

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Solution

The fourth proportional to 180,520.88, 270,936.84 and 87,105.20 is: 130,732.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,520.88 : 270,936.84 = 87,105.20 : x
  2. Step 2: Convert to fraction form
    180,520.88/270,936.84 = 87,105.20/x
  3. Step 3: Cross multiply
    180,520.88x = 270,936.84 × 87,105.20
  4. Step 4: Simplify right side
    180,520.88x = 23,600,007,635.57
  5. Step 5: Solve for x
    x = 23,600,007,635.57/180,520.88
  6. Step 6: Final answer
    x = 130,732.84

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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.