Home / 120,357.44-166,081.72-71,949.79

Finding the Fourth Proportional to 120,357.44, 166,081.72 and 71,949.79

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Solution

The fourth proportional to 120,357.44, 166,081.72 and 71,949.79 is: 99,283.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,357.44 : 166,081.72 = 71,949.79 : x
  2. Step 2: Convert to fraction form
    120,357.44/166,081.72 = 71,949.79/x
  3. Step 3: Cross multiply
    120,357.44x = 166,081.72 × 71,949.79
  4. Step 4: Simplify right side
    120,357.44x = 11,949,545,304.22
  5. Step 5: Solve for x
    x = 11,949,545,304.22/120,357.44
  6. Step 6: Final answer
    x = 99,283.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.