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Finding the Fourth Proportional to 159,215.49, 219,717.36 and 87,593.97

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Solution

The fourth proportional to 159,215.49, 219,717.36 and 87,593.97 is: 120,879.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,215.49 : 219,717.36 = 87,593.97 : x
  2. Step 2: Convert to fraction form
    159,215.49/219,717.36 = 87,593.97/x
  3. Step 3: Cross multiply
    159,215.49x = 219,717.36 × 87,593.97
  4. Step 4: Simplify right side
    159,215.49x = 19,245,915,840.32
  5. Step 5: Solve for x
    x = 19,245,915,840.32/159,215.49
  6. Step 6: Final answer
    x = 120,879.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.