Home / 81,322.07-122,056.00-68,077.96

Finding the Fourth Proportional to 81,322.07, 122,056.00 and 68,077.96

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Solution

The fourth proportional to 81,322.07, 122,056.00 and 68,077.96 is: 102,177.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,322.07 : 122,056.00 = 68,077.96 : x
  2. Step 2: Convert to fraction form
    81,322.07/122,056.00 = 68,077.96/x
  3. Step 3: Cross multiply
    81,322.07x = 122,056.00 × 68,077.96
  4. Step 4: Simplify right side
    81,322.07x = 8,309,323,010.43
  5. Step 5: Solve for x
    x = 8,309,323,010.43/81,322.07
  6. Step 6: Final answer
    x = 102,177.96

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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.