Home / 211,713.99-317,155.78-122,780.65

Finding the Fourth Proportional to 211,713.99, 317,155.78 and 122,780.65

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Solution

The fourth proportional to 211,713.99, 317,155.78 and 122,780.65 is: 183,930.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,713.99 : 317,155.78 = 122,780.65 : x
  2. Step 2: Convert to fraction form
    211,713.99/317,155.78 = 122,780.65/x
  3. Step 3: Cross multiply
    211,713.99x = 317,155.78 × 122,780.65
  4. Step 4: Simplify right side
    211,713.99x = 38,940,592,819.66
  5. Step 5: Solve for x
    x = 38,940,592,819.66/211,713.99
  6. Step 6: Final answer
    x = 183,930.18

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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.