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Finding the Fourth Proportional to 159,377.34, 219,945.57 and 87,759.92

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Solution

The fourth proportional to 159,377.34, 219,945.57 and 87,759.92 is: 121,111.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,377.34 : 219,945.57 = 87,759.92 : x
  2. Step 2: Convert to fraction form
    159,377.34/219,945.57 = 87,759.92/x
  3. Step 3: Cross multiply
    159,377.34x = 219,945.57 × 87,759.92
  4. Step 4: Simplify right side
    159,377.34x = 19,302,405,627.55
  5. Step 5: Solve for x
    x = 19,302,405,627.55/159,377.34
  6. Step 6: Final answer
    x = 121,111.36

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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.