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Finding the Fourth Proportional to 143,170.67, 214,428.87 and 68,343.35

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Solution

The fourth proportional to 143,170.67, 214,428.87 and 68,343.35 is: 102,358.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,170.67 : 214,428.87 = 68,343.35 : x
  2. Step 2: Convert to fraction form
    143,170.67/214,428.87 = 68,343.35/x
  3. Step 3: Cross multiply
    143,170.67x = 214,428.87 × 68,343.35
  4. Step 4: Simplify right side
    143,170.67x = 14,654,786,240.37
  5. Step 5: Solve for x
    x = 14,654,786,240.37/143,170.67
  6. Step 6: Final answer
    x = 102,358.86

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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.