Home / 188,018.72-281,736.48-108,936.80

Finding the Fourth Proportional to 188,018.72, 281,736.48 and 108,936.80

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Solution

The fourth proportional to 188,018.72, 281,736.48 and 108,936.80 is: 163,236.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,018.72 : 281,736.48 = 108,936.80 : x
  2. Step 2: Convert to fraction form
    188,018.72/281,736.48 = 108,936.80/x
  3. Step 3: Cross multiply
    188,018.72x = 281,736.48 × 108,936.80
  4. Step 4: Simplify right side
    188,018.72x = 30,691,470,574.46
  5. Step 5: Solve for x
    x = 30,691,470,574.46/188,018.72
  6. Step 6: Final answer
    x = 163,236.25

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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.