Home / 138,785.25-208,183.64-40,289.25

Finding the Fourth Proportional to 138,785.25, 208,183.64 and 40,289.25

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Solution

The fourth proportional to 138,785.25, 208,183.64 and 40,289.25 is: 60,435.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,785.25 : 208,183.64 = 40,289.25 : x
  2. Step 2: Convert to fraction form
    138,785.25/208,183.64 = 40,289.25/x
  3. Step 3: Cross multiply
    138,785.25x = 208,183.64 × 40,289.25
  4. Step 4: Simplify right side
    138,785.25x = 8,387,562,717.87
  5. Step 5: Solve for x
    x = 8,387,562,717.87/138,785.25
  6. Step 6: Final answer
    x = 60,435.55

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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.