Home / 103,974.67-143,315.80-81,273.61

Finding the Fourth Proportional to 103,974.67, 143,315.80 and 81,273.61

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Solution

The fourth proportional to 103,974.67, 143,315.80 and 81,273.61 is: 112,025.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,974.67 : 143,315.80 = 81,273.61 : x
  2. Step 2: Convert to fraction form
    103,974.67/143,315.80 = 81,273.61/x
  3. Step 3: Cross multiply
    103,974.67x = 143,315.80 × 81,273.61
  4. Step 4: Simplify right side
    103,974.67x = 11,647,792,436.04
  5. Step 5: Solve for x
    x = 11,647,792,436.04/103,974.67
  6. Step 6: Final answer
    x = 112,025.29

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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.