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Finding the Fourth Proportional to 188,739.27, 283,108.90 and 68,805.21

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Solution

The fourth proportional to 188,739.27, 283,108.90 and 68,805.21 is: 103,207.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,739.27 : 283,108.90 = 68,805.21 : x
  2. Step 2: Convert to fraction form
    188,739.27/283,108.90 = 68,805.21/x
  3. Step 3: Cross multiply
    188,739.27x = 283,108.90 × 68,805.21
  4. Step 4: Simplify right side
    188,739.27x = 19,479,367,317.37
  5. Step 5: Solve for x
    x = 19,479,367,317.37/188,739.27
  6. Step 6: Final answer
    x = 103,207.81

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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.