Home / 215,916.30-323,846.10-66,171.60

Finding the Fourth Proportional to 215,916.30, 323,846.10 and 66,171.60

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Solution

The fourth proportional to 215,916.30, 323,846.10 and 66,171.60 is: 99,248.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,916.30 : 323,846.10 = 66,171.60 : x
  2. Step 2: Convert to fraction form
    215,916.30/323,846.10 = 66,171.60/x
  3. Step 3: Cross multiply
    215,916.30x = 323,846.10 × 66,171.60
  4. Step 4: Simplify right side
    215,916.30x = 21,429,414,590.76
  5. Step 5: Solve for x
    x = 21,429,414,590.76/215,916.30
  6. Step 6: Final answer
    x = 99,248.71

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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.