Home / 87,128.26-130,517.39-73,743.86

Finding the Fourth Proportional to 87,128.26, 130,517.39 and 73,743.86

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Solution

The fourth proportional to 87,128.26, 130,517.39 and 73,743.86 is: 110,467.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,128.26 : 130,517.39 = 73,743.86 : x
  2. Step 2: Convert to fraction form
    87,128.26/130,517.39 = 73,743.86/x
  3. Step 3: Cross multiply
    87,128.26x = 130,517.39 × 73,743.86
  4. Step 4: Simplify right side
    87,128.26x = 9,624,856,135.73
  5. Step 5: Solve for x
    x = 9,624,856,135.73/87,128.26
  6. Step 6: Final answer
    x = 110,467.67

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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.