Home / 119,791.20-179,600.40-78,261.60

Finding the Fourth Proportional to 119,791.20, 179,600.40 and 78,261.60

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Solution

The fourth proportional to 119,791.20, 179,600.40 and 78,261.60 is: 117,335.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,791.20 : 179,600.40 = 78,261.60 : x
  2. Step 2: Convert to fraction form
    119,791.20/179,600.40 = 78,261.60/x
  3. Step 3: Cross multiply
    119,791.20x = 179,600.40 × 78,261.60
  4. Step 4: Simplify right side
    119,791.20x = 14,055,814,664.64
  5. Step 5: Solve for x
    x = 14,055,814,664.64/119,791.20
  6. Step 6: Final answer
    x = 117,335.95

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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.