Home / 128,171.16-192,284.00-43,908.71

Finding the Fourth Proportional to 128,171.16, 192,284.00 and 43,908.71

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Solution

The fourth proportional to 128,171.16, 192,284.00 and 43,908.71 is: 65,872.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,171.16 : 192,284.00 = 43,908.71 : x
  2. Step 2: Convert to fraction form
    128,171.16/192,284.00 = 43,908.71/x
  3. Step 3: Cross multiply
    128,171.16x = 192,284.00 × 43,908.71
  4. Step 4: Simplify right side
    128,171.16x = 8,442,941,212.68
  5. Step 5: Solve for x
    x = 8,442,941,212.68/128,171.16
  6. Step 6: Final answer
    x = 65,872.39

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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.