Home / 85,138.09-127,723.91-25,167.61

Finding the Fourth Proportional to 85,138.09, 127,723.91 and 25,167.61

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Solution

The fourth proportional to 85,138.09, 127,723.91 and 25,167.61 is: 37,756.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,138.09 : 127,723.91 = 25,167.61 : x
  2. Step 2: Convert to fraction form
    85,138.09/127,723.91 = 25,167.61/x
  3. Step 3: Cross multiply
    85,138.09x = 127,723.91 × 25,167.61
  4. Step 4: Simplify right side
    85,138.09x = 3,214,505,729.94
  5. Step 5: Solve for x
    x = 3,214,505,729.94/85,138.09
  6. Step 6: Final answer
    x = 37,756.38

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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.