Home / 143,496.24-215,244-68,388.72

Finding the Fourth Proportional to 143,496.24, 215,244 and 68,388.72

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Solution

The fourth proportional to 143,496.24, 215,244 and 68,388.72 is: 102,582.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,496.24 : 215,244 = 68,388.72 : x
  2. Step 2: Convert to fraction form
    143,496.24/215,244 = 68,388.72/x
  3. Step 3: Cross multiply
    143,496.24x = 215,244 × 68,388.72
  4. Step 4: Simplify right side
    143,496.24x = 14,720,261,647.68
  5. Step 5: Solve for x
    x = 14,720,261,647.68/143,496.24
  6. Step 6: Final answer
    x = 102,582.91

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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.