Home / 143,426.26-215,138.03-87,282.33

Finding the Fourth Proportional to 143,426.26, 215,138.03 and 87,282.33

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Solution

The fourth proportional to 143,426.26, 215,138.03 and 87,282.33 is: 130,922.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,426.26 : 215,138.03 = 87,282.33 : x
  2. Step 2: Convert to fraction form
    143,426.26/215,138.03 = 87,282.33/x
  3. Step 3: Cross multiply
    143,426.26x = 215,138.03 × 87,282.33
  4. Step 4: Simplify right side
    143,426.26x = 18,777,747,286.83
  5. Step 5: Solve for x
    x = 18,777,747,286.83/143,426.26
  6. Step 6: Final answer
    x = 130,922.66

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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.