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Finding the Fourth Proportional to 125,436.60, 188,009.10 and 50,519.70

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Solution

The fourth proportional to 125,436.60, 188,009.10 and 50,519.70 is: 75,720.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,436.60 : 188,009.10 = 50,519.70 : x
  2. Step 2: Convert to fraction form
    125,436.60/188,009.10 = 50,519.70/x
  3. Step 3: Cross multiply
    125,436.60x = 188,009.10 × 50,519.70
  4. Step 4: Simplify right side
    125,436.60x = 9,498,163,329.27
  5. Step 5: Solve for x
    x = 9,498,163,329.27/125,436.60
  6. Step 6: Final answer
    x = 75,720.83

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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.