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Finding the Fourth Proportional to 125,380.11, 188,134.83 and 83,289.27

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Solution

The fourth proportional to 125,380.11, 188,134.83 and 83,289.27 is: 124,976.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,380.11 : 188,134.83 = 83,289.27 : x
  2. Step 2: Convert to fraction form
    125,380.11/188,134.83 = 83,289.27/x
  3. Step 3: Cross multiply
    125,380.11x = 188,134.83 × 83,289.27
  4. Step 4: Simplify right side
    125,380.11x = 15,669,612,652.27
  5. Step 5: Solve for x
    x = 15,669,612,652.27/125,380.11
  6. Step 6: Final answer
    x = 124,976.86

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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.