Home / 81,323.07-122,057.50-68,078.96

Finding the Fourth Proportional to 81,323.07, 122,057.50 and 68,078.96

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Solution

The fourth proportional to 81,323.07, 122,057.50 and 68,078.96 is: 102,179.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,323.07 : 122,057.50 = 68,078.96 : x
  2. Step 2: Convert to fraction form
    81,323.07/122,057.50 = 68,078.96/x
  3. Step 3: Cross multiply
    81,323.07x = 122,057.50 × 68,078.96
  4. Step 4: Simplify right side
    81,323.07x = 8,309,547,660.20
  5. Step 5: Solve for x
    x = 8,309,547,660.20/81,323.07
  6. Step 6: Final answer
    x = 102,179.46

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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.