Home / 137,684.22-206,517.87-81,879.45

Finding the Fourth Proportional to 137,684.22, 206,517.87 and 81,879.45

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Solution

The fourth proportional to 137,684.22, 206,517.87 and 81,879.45 is: 122,814.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,684.22 : 206,517.87 = 81,879.45 : x
  2. Step 2: Convert to fraction form
    137,684.22/206,517.87 = 81,879.45/x
  3. Step 3: Cross multiply
    137,684.22x = 206,517.87 × 81,879.45
  4. Step 4: Simplify right side
    137,684.22x = 16,909,569,610.77
  5. Step 5: Solve for x
    x = 16,909,569,610.77/137,684.22
  6. Step 6: Final answer
    x = 122,814.14

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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.