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Finding the Fourth Proportional to 159,182.70, 219,670.90 and 87,561.15

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Solution

The fourth proportional to 159,182.70, 219,670.90 and 87,561.15 is: 120,833.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,182.70 : 219,670.90 = 87,561.15 : x
  2. Step 2: Convert to fraction form
    159,182.70/219,670.90 = 87,561.15/x
  3. Step 3: Cross multiply
    159,182.70x = 219,670.90 × 87,561.15
  4. Step 4: Simplify right side
    159,182.70x = 19,234,636,187.73
  5. Step 5: Solve for x
    x = 19,234,636,187.73/159,182.70
  6. Step 6: Final answer
    x = 120,833.71

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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.