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Finding the Fourth Proportional to 119,906.91, 179,878.13 and 39,918.75

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Solution

The fourth proportional to 119,906.91, 179,878.13 and 39,918.75 is: 59,884.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,906.91 : 179,878.13 = 39,918.75 : x
  2. Step 2: Convert to fraction form
    119,906.91/179,878.13 = 39,918.75/x
  3. Step 3: Cross multiply
    119,906.91x = 179,878.13 × 39,918.75
  4. Step 4: Simplify right side
    119,906.91x = 7,180,509,939.54
  5. Step 5: Solve for x
    x = 7,180,509,939.54/119,906.91
  6. Step 6: Final answer
    x = 59,884.04

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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.