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Finding the Fourth Proportional to 143,246.34, 214,808.76 and 68,279.76

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Solution

The fourth proportional to 143,246.34, 214,808.76 and 68,279.76 is: 102,390.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,246.34 : 214,808.76 = 68,279.76 : x
  2. Step 2: Convert to fraction form
    143,246.34/214,808.76 = 68,279.76/x
  3. Step 3: Cross multiply
    143,246.34x = 214,808.76 × 68,279.76
  4. Step 4: Simplify right side
    143,246.34x = 14,667,090,578.70
  5. Step 5: Solve for x
    x = 14,667,090,578.70/143,246.34
  6. Step 6: Final answer
    x = 102,390.68

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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.