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Finding the Fourth Proportional to 159,063.89, 219,512.37 and 86,471.67

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Solution

The fourth proportional to 159,063.89, 219,512.37 and 86,471.67 is: 119,333.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,063.89 : 219,512.37 = 86,471.67 : x
  2. Step 2: Convert to fraction form
    159,063.89/219,512.37 = 86,471.67/x
  3. Step 3: Cross multiply
    159,063.89x = 219,512.37 × 86,471.67
  4. Step 4: Simplify right side
    159,063.89x = 18,981,601,219.56
  5. Step 5: Solve for x
    x = 18,981,601,219.56/159,063.89
  6. Step 6: Final answer
    x = 119,333.19

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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.