Home / 213,973.38-320,963.72-80,916.30

Finding the Fourth Proportional to 213,973.38, 320,963.72 and 80,916.30

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Solution

The fourth proportional to 213,973.38, 320,963.72 and 80,916.30 is: 121,375.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,973.38 : 320,963.72 = 80,916.30 : x
  2. Step 2: Convert to fraction form
    213,973.38/320,963.72 = 80,916.30/x
  3. Step 3: Cross multiply
    213,973.38x = 320,963.72 × 80,916.30
  4. Step 4: Simplify right side
    213,973.38x = 25,971,196,252.05
  5. Step 5: Solve for x
    x = 25,971,196,252.05/213,973.38
  6. Step 6: Final answer
    x = 121,375.83

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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.