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Finding the Fourth Proportional to 188,640.83, 260,361.33 and 108,122.33

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Solution

The fourth proportional to 188,640.83, 260,361.33 and 108,122.33 is: 149,230.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,640.83 : 260,361.33 = 108,122.33 : x
  2. Step 2: Convert to fraction form
    188,640.83/260,361.33 = 108,122.33/x
  3. Step 3: Cross multiply
    188,640.83x = 260,361.33 × 108,122.33
  4. Step 4: Simplify right side
    188,640.83x = 28,150,873,641.50
  5. Step 5: Solve for x
    x = 28,150,873,641.50/188,640.83
  6. Step 6: Final answer
    x = 149,230.01

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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.