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Finding the Fourth Proportional to 159,193.78, 219,680.49 and 87,569.26

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Solution

The fourth proportional to 159,193.78, 219,680.49 and 87,569.26 is: 120,841.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,193.78 : 219,680.49 = 87,569.26 : x
  2. Step 2: Convert to fraction form
    159,193.78/219,680.49 = 87,569.26/x
  3. Step 3: Cross multiply
    159,193.78x = 219,680.49 × 87,569.26
  4. Step 4: Simplify right side
    159,193.78x = 19,237,257,945.74
  5. Step 5: Solve for x
    x = 19,237,257,945.74/159,193.78
  6. Step 6: Final answer
    x = 120,841.77

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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.