Home / 201,819.91-278,497.09-120,143.83

Finding the Fourth Proportional to 201,819.91, 278,497.09 and 120,143.83

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Solution

The fourth proportional to 201,819.91, 278,497.09 and 120,143.83 is: 165,789.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,819.91 : 278,497.09 = 120,143.83 : x
  2. Step 2: Convert to fraction form
    201,819.91/278,497.09 = 120,143.83/x
  3. Step 3: Cross multiply
    201,819.91x = 278,497.09 × 120,143.83
  4. Step 4: Simplify right side
    201,819.91x = 33,459,707,036.45
  5. Step 5: Solve for x
    x = 33,459,707,036.45/201,819.91
  6. Step 6: Final answer
    x = 165,789.92

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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.