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Finding the Fourth Proportional to 125,344.60, 188,074.31 and 54,288.97

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Solution

The fourth proportional to 125,344.60, 188,074.31 and 54,288.97 is: 81,458.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,344.60 : 188,074.31 = 54,288.97 : x
  2. Step 2: Convert to fraction form
    125,344.60/188,074.31 = 54,288.97/x
  3. Step 3: Cross multiply
    125,344.60x = 188,074.31 × 54,288.97
  4. Step 4: Simplify right side
    125,344.60x = 10,210,360,944.18
  5. Step 5: Solve for x
    x = 10,210,360,944.18/125,344.60
  6. Step 6: Final answer
    x = 81,458.32

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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.