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Finding the Fourth Proportional to 159,264.86, 219,791.34 and 87,650.33

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Solution

The fourth proportional to 159,264.86, 219,791.34 and 87,650.33 is: 120,960.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,264.86 : 219,791.34 = 87,650.33 : x
  2. Step 2: Convert to fraction form
    159,264.86/219,791.34 = 87,650.33/x
  3. Step 3: Cross multiply
    159,264.86x = 219,791.34 × 87,650.33
  4. Step 4: Simplify right side
    159,264.86x = 19,264,782,383.19
  5. Step 5: Solve for x
    x = 19,264,782,383.19/159,264.86
  6. Step 6: Final answer
    x = 120,960.66

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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.