Home / 201,542.52-278,128.94-112,118.52

Finding the Fourth Proportional to 201,542.52, 278,128.94 and 112,118.52

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Solution

The fourth proportional to 201,542.52, 278,128.94 and 112,118.52 is: 154,723.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,542.52 : 278,128.94 = 112,118.52 : x
  2. Step 2: Convert to fraction form
    201,542.52/278,128.94 = 112,118.52/x
  3. Step 3: Cross multiply
    201,542.52x = 278,128.94 × 112,118.52
  4. Step 4: Simplify right side
    201,542.52x = 31,183,405,121.97
  5. Step 5: Solve for x
    x = 31,183,405,121.97/201,542.52
  6. Step 6: Final answer
    x = 154,723.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.