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Finding the Fourth Proportional to 143,169.61, 214,659.64 and 68,301.31

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Solution

The fourth proportional to 143,169.61, 214,659.64 and 68,301.31 is: 102,406.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,169.61 : 214,659.64 = 68,301.31 : x
  2. Step 2: Convert to fraction form
    143,169.61/214,659.64 = 68,301.31/x
  3. Step 3: Cross multiply
    143,169.61x = 214,659.64 × 68,301.31
  4. Step 4: Simplify right side
    143,169.61x = 14,661,534,183.15
  5. Step 5: Solve for x
    x = 14,661,534,183.15/143,169.61
  6. Step 6: Final answer
    x = 102,406.75

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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.