Home / 120,761.20-181,314.60-68,273.20

Finding the Fourth Proportional to 120,761.20, 181,314.60 and 68,273.20

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Solution

The fourth proportional to 120,761.20, 181,314.60 and 68,273.20 is: 102,507.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,761.20 : 181,314.60 = 68,273.20 : x
  2. Step 2: Convert to fraction form
    120,761.20/181,314.60 = 68,273.20/x
  3. Step 3: Cross multiply
    120,761.20x = 181,314.60 × 68,273.20
  4. Step 4: Simplify right side
    120,761.20x = 12,378,927,948.72
  5. Step 5: Solve for x
    x = 12,378,927,948.72/120,761.20
  6. Step 6: Final answer
    x = 102,507.49

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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.