Home / 217,965.84-300,791.88-121,169.04

Finding the Fourth Proportional to 217,965.84, 300,791.88 and 121,169.04

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Solution

The fourth proportional to 217,965.84, 300,791.88 and 121,169.04 is: 167,212.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,965.84 : 300,791.88 = 121,169.04 : x
  2. Step 2: Convert to fraction form
    217,965.84/300,791.88 = 121,169.04/x
  3. Step 3: Cross multiply
    217,965.84x = 300,791.88 × 121,169.04
  4. Step 4: Simplify right side
    217,965.84x = 36,446,663,339.40
  5. Step 5: Solve for x
    x = 36,446,663,339.40/217,965.84
  6. Step 6: Final answer
    x = 167,212.73

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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.