Home / 199,123.81-274,789.78-108,479.57

Finding the Fourth Proportional to 199,123.81, 274,789.78 and 108,479.57

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Solution

The fourth proportional to 199,123.81, 274,789.78 and 108,479.57 is: 149,701.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,123.81 : 274,789.78 = 108,479.57 : x
  2. Step 2: Convert to fraction form
    199,123.81/274,789.78 = 108,479.57/x
  3. Step 3: Cross multiply
    199,123.81x = 274,789.78 × 108,479.57
  4. Step 4: Simplify right side
    199,123.81x = 29,809,075,529.65
  5. Step 5: Solve for x
    x = 29,809,075,529.65/199,123.81
  6. Step 6: Final answer
    x = 149,701.21

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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.