Home / 171,728.87-257,540.79-118,761.26

Finding the Fourth Proportional to 171,728.87, 257,540.79 and 118,761.26

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Solution

The fourth proportional to 171,728.87, 257,540.79 and 118,761.26 is: 178,105.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,728.87 : 257,540.79 = 118,761.26 : x
  2. Step 2: Convert to fraction form
    171,728.87/257,540.79 = 118,761.26/x
  3. Step 3: Cross multiply
    171,728.87x = 257,540.79 × 118,761.26
  4. Step 4: Simplify right side
    171,728.87x = 30,585,867,434.09
  5. Step 5: Solve for x
    x = 30,585,867,434.09/171,728.87
  6. Step 6: Final answer
    x = 178,105.56

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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.