Home / 187,388.78-281,112.57-80,803.04

Finding the Fourth Proportional to 187,388.78, 281,112.57 and 80,803.04

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Solution

The fourth proportional to 187,388.78, 281,112.57 and 80,803.04 is: 121,217.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,388.78 : 281,112.57 = 80,803.04 : x
  2. Step 2: Convert to fraction form
    187,388.78/281,112.57 = 80,803.04/x
  3. Step 3: Cross multiply
    187,388.78x = 281,112.57 × 80,803.04
  4. Step 4: Simplify right side
    187,388.78x = 22,714,750,238.21
  5. Step 5: Solve for x
    x = 22,714,750,238.21/187,388.78
  6. Step 6: Final answer
    x = 121,217.24

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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.