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Finding the Fourth Proportional to 159,589.77, 239,475.90 and 80,709.81

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Solution

The fourth proportional to 159,589.77, 239,475.90 and 80,709.81 is: 121,110.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,589.77 : 239,475.90 = 80,709.81 : x
  2. Step 2: Convert to fraction form
    159,589.77/239,475.90 = 80,709.81/x
  3. Step 3: Cross multiply
    159,589.77x = 239,475.90 × 80,709.81
  4. Step 4: Simplify right side
    159,589.77x = 19,328,054,388.58
  5. Step 5: Solve for x
    x = 19,328,054,388.58/159,589.77
  6. Step 6: Final answer
    x = 121,110.86

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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.