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Finding the Fourth Proportional to 159,302.37, 219,835.52 and 87,680.85

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Solution

The fourth proportional to 159,302.37, 219,835.52 and 87,680.85 is: 120,998.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,302.37 : 219,835.52 = 87,680.85 : x
  2. Step 2: Convert to fraction form
    159,302.37/219,835.52 = 87,680.85/x
  3. Step 3: Cross multiply
    159,302.37x = 219,835.52 × 87,680.85
  4. Step 4: Simplify right side
    159,302.37x = 19,275,365,253.79
  5. Step 5: Solve for x
    x = 19,275,365,253.79/159,302.37
  6. Step 6: Final answer
    x = 120,998.61

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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.