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Finding the Fourth Proportional to 100,107.37, 138,146.33 and 54,784.45

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Solution

The fourth proportional to 100,107.37, 138,146.33 and 54,784.45 is: 75,601.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,107.37 : 138,146.33 = 54,784.45 : x
  2. Step 2: Convert to fraction form
    100,107.37/138,146.33 = 54,784.45/x
  3. Step 3: Cross multiply
    100,107.37x = 138,146.33 × 54,784.45
  4. Step 4: Simplify right side
    100,107.37x = 7,568,269,743.91
  5. Step 5: Solve for x
    x = 7,568,269,743.91/100,107.37
  6. Step 6: Final answer
    x = 75,601.52

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.