Home / 111,168.12-153,546.66-80,905.44

Finding the Fourth Proportional to 111,168.12, 153,546.66 and 80,905.44

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Solution

The fourth proportional to 111,168.12, 153,546.66 and 80,905.44 is: 111,747.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,168.12 : 153,546.66 = 80,905.44 : x
  2. Step 2: Convert to fraction form
    111,168.12/153,546.66 = 80,905.44/x
  3. Step 3: Cross multiply
    111,168.12x = 153,546.66 × 80,905.44
  4. Step 4: Simplify right side
    111,168.12x = 12,422,760,087.83
  5. Step 5: Solve for x
    x = 12,422,760,087.83/111,168.12
  6. Step 6: Final answer
    x = 111,747.51

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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.