Home / 143,419.91-215,121.60-54,682.38

Finding the Fourth Proportional to 143,419.91, 215,121.60 and 54,682.38

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Solution

The fourth proportional to 143,419.91, 215,121.60 and 54,682.38 is: 82,020.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,419.91 : 215,121.60 = 54,682.38 : x
  2. Step 2: Convert to fraction form
    143,419.91/215,121.60 = 54,682.38/x
  3. Step 3: Cross multiply
    143,419.91x = 215,121.60 × 54,682.38
  4. Step 4: Simplify right side
    143,419.91x = 11,763,361,077.41
  5. Step 5: Solve for x
    x = 11,763,361,077.41/143,419.91
  6. Step 6: Final answer
    x = 82,020.42

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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.