Home / 195,728.48-270,100.60-115,161.20

Finding the Fourth Proportional to 195,728.48, 270,100.60 and 115,161.20

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Solution

The fourth proportional to 195,728.48, 270,100.60 and 115,161.20 is: 158,919.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    195,728.48 : 270,100.60 = 115,161.20 : x
  2. Step 2: Convert to fraction form
    195,728.48/270,100.60 = 115,161.20/x
  3. Step 3: Cross multiply
    195,728.48x = 270,100.60 × 115,161.20
  4. Step 4: Simplify right side
    195,728.48x = 31,105,109,216.72
  5. Step 5: Solve for x
    x = 31,105,109,216.72/195,728.48
  6. Step 6: Final answer
    x = 158,919.69

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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.