Home / 111,342.20-166,896.66-71,982.68

Finding the Fourth Proportional to 111,342.20, 166,896.66 and 71,982.68

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Solution

The fourth proportional to 111,342.20, 166,896.66 and 71,982.68 is: 107,898.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,342.20 : 166,896.66 = 71,982.68 : x
  2. Step 2: Convert to fraction form
    111,342.20/166,896.66 = 71,982.68/x
  3. Step 3: Cross multiply
    111,342.20x = 166,896.66 × 71,982.68
  4. Step 4: Simplify right side
    111,342.20x = 12,013,668,869.85
  5. Step 5: Solve for x
    x = 12,013,668,869.85/111,342.20
  6. Step 6: Final answer
    x = 107,898.61

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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.