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Finding the Fourth Proportional to 225,993.53, 311,870.09 and 124,020.65

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Solution

The fourth proportional to 225,993.53, 311,870.09 and 124,020.65 is: 171,147.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,993.53 : 311,870.09 = 124,020.65 : x
  2. Step 2: Convert to fraction form
    225,993.53/311,870.09 = 124,020.65/x
  3. Step 3: Cross multiply
    225,993.53x = 311,870.09 × 124,020.65
  4. Step 4: Simplify right side
    225,993.53x = 38,678,329,097.90
  5. Step 5: Solve for x
    x = 38,678,329,097.90/225,993.53
  6. Step 6: Final answer
    x = 171,147.95

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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.