Home / 149,866.41-206,813.19-81,881.92

Finding the Fourth Proportional to 149,866.41, 206,813.19 and 81,881.92

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Solution

The fourth proportional to 149,866.41, 206,813.19 and 81,881.92 is: 112,995.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,866.41 : 206,813.19 = 81,881.92 : x
  2. Step 2: Convert to fraction form
    149,866.41/206,813.19 = 81,881.92/x
  3. Step 3: Cross multiply
    149,866.41x = 206,813.19 × 81,881.92
  4. Step 4: Simplify right side
    149,866.41x = 16,934,261,078.52
  5. Step 5: Solve for x
    x = 16,934,261,078.52/149,866.41
  6. Step 6: Final answer
    x = 112,995.71

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Why These Related Problems?

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