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Finding the Fourth Proportional to 143,210.89, 214,489.11 and 68,383.44

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Solution

The fourth proportional to 143,210.89, 214,489.11 and 68,383.44 is: 102,418.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,210.89 : 214,489.11 = 68,383.44 : x
  2. Step 2: Convert to fraction form
    143,210.89/214,489.11 = 68,383.44/x
  3. Step 3: Cross multiply
    143,210.89x = 214,489.11 × 68,383.44
  4. Step 4: Simplify right side
    143,210.89x = 14,667,503,184.34
  5. Step 5: Solve for x
    x = 14,667,503,184.34/143,210.89
  6. Step 6: Final answer
    x = 102,418.91

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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.