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Finding the Fourth Proportional to 159,379.88, 219,944.23 and 87,759.72

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Solution

The fourth proportional to 159,379.88, 219,944.23 and 87,759.72 is: 121,108.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,379.88 : 219,944.23 = 87,759.72 : x
  2. Step 2: Convert to fraction form
    159,379.88/219,944.23 = 87,759.72/x
  3. Step 3: Cross multiply
    159,379.88x = 219,944.23 × 87,759.72
  4. Step 4: Simplify right side
    159,379.88x = 19,302,243,821.02
  5. Step 5: Solve for x
    x = 19,302,243,821.02/159,379.88
  6. Step 6: Final answer
    x = 121,108.41

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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.