Home / 137,569.50-189,845.91-81,015.66

Finding the Fourth Proportional to 137,569.50, 189,845.91 and 81,015.66

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Solution

The fourth proportional to 137,569.50, 189,845.91 and 81,015.66 is: 111,801.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,569.50 : 189,845.91 = 81,015.66 : x
  2. Step 2: Convert to fraction form
    137,569.50/189,845.91 = 81,015.66/x
  3. Step 3: Cross multiply
    137,569.50x = 189,845.91 × 81,015.66
  4. Step 4: Simplify right side
    137,569.50x = 15,380,491,696.95
  5. Step 5: Solve for x
    x = 15,380,491,696.95/137,569.50
  6. Step 6: Final answer
    x = 111,801.61

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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.