Home / 189,375.30-284,162.31-71,128.26

Finding the Fourth Proportional to 189,375.30, 284,162.31 and 71,128.26

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Solution

The fourth proportional to 189,375.30, 284,162.31 and 71,128.26 is: 106,729.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,375.30 : 284,162.31 = 71,128.26 : x
  2. Step 2: Convert to fraction form
    189,375.30/284,162.31 = 71,128.26/x
  3. Step 3: Cross multiply
    189,375.30x = 284,162.31 × 71,128.26
  4. Step 4: Simplify right side
    189,375.30x = 20,211,970,667.88
  5. Step 5: Solve for x
    x = 20,211,970,667.88/189,375.30
  6. Step 6: Final answer
    x = 106,729.71

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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.