Home / 120,338.06-180,499.79-31,589.60

Finding the Fourth Proportional to 120,338.06, 180,499.79 and 31,589.60

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Solution

The fourth proportional to 120,338.06, 180,499.79 and 31,589.60 is: 47,382.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,338.06 : 180,499.79 = 31,589.60 : x
  2. Step 2: Convert to fraction form
    120,338.06/180,499.79 = 31,589.60/x
  3. Step 3: Cross multiply
    120,338.06x = 180,499.79 × 31,589.60
  4. Step 4: Simplify right side
    120,338.06x = 5,701,915,342.66
  5. Step 5: Solve for x
    x = 5,701,915,342.66/120,338.06
  6. Step 6: Final answer
    x = 47,382.48

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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.