Home / 148,434.60-222,791.10-78,364.20

Finding the Fourth Proportional to 148,434.60, 222,791.10 and 78,364.20

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Solution

The fourth proportional to 148,434.60, 222,791.10 and 78,364.20 is: 117,619.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,434.60 : 222,791.10 = 78,364.20 : x
  2. Step 2: Convert to fraction form
    148,434.60/222,791.10 = 78,364.20/x
  3. Step 3: Cross multiply
    148,434.60x = 222,791.10 × 78,364.20
  4. Step 4: Simplify right side
    148,434.60x = 17,458,846,318.62
  5. Step 5: Solve for x
    x = 17,458,846,318.62/148,434.60
  6. Step 6: Final answer
    x = 117,619.79

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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.