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Finding the Fourth Proportional to 179,587.86, 269,383.12 and 79,721.20

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Solution

The fourth proportional to 179,587.86, 269,383.12 and 79,721.20 is: 119,582.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,587.86 : 269,383.12 = 79,721.20 : x
  2. Step 2: Convert to fraction form
    179,587.86/269,383.12 = 79,721.20/x
  3. Step 3: Cross multiply
    179,587.86x = 269,383.12 × 79,721.20
  4. Step 4: Simplify right side
    179,587.86x = 21,475,545,586.14
  5. Step 5: Solve for x
    x = 21,475,545,586.14/179,587.86
  6. Step 6: Final answer
    x = 119,582.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.