Home / 143,561.55-215,325.92-38,388.72

Finding the Fourth Proportional to 143,561.55, 215,325.92 and 38,388.72

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Solution

The fourth proportional to 143,561.55, 215,325.92 and 38,388.72 is: 57,578.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,561.55 : 215,325.92 = 38,388.72 : x
  2. Step 2: Convert to fraction form
    143,561.55/215,325.92 = 38,388.72/x
  3. Step 3: Cross multiply
    143,561.55x = 215,325.92 × 38,388.72
  4. Step 4: Simplify right side
    143,561.55x = 8,266,085,183.05
  5. Step 5: Solve for x
    x = 8,266,085,183.05/143,561.55
  6. Step 6: Final answer
    x = 57,578.69

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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.