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Finding the Fourth Proportional to 139,027.72, 208,541.58 and 50,260.46

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Solution

The fourth proportional to 139,027.72, 208,541.58 and 50,260.46 is: 75,390.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,027.72 : 208,541.58 = 50,260.46 : x
  2. Step 2: Convert to fraction form
    139,027.72/208,541.58 = 50,260.46/x
  3. Step 3: Cross multiply
    139,027.72x = 208,541.58 × 50,260.46
  4. Step 4: Simplify right side
    139,027.72x = 10,481,395,739.93
  5. Step 5: Solve for x
    x = 10,481,395,739.93/139,027.72
  6. Step 6: Final answer
    x = 75,390.69

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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.