Home / 187,918.32-281,891.31-81,405.61

Finding the Fourth Proportional to 187,918.32, 281,891.31 and 81,405.61

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Solution

The fourth proportional to 187,918.32, 281,891.31 and 81,405.61 is: 122,114.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,918.32 : 281,891.31 = 81,405.61 : x
  2. Step 2: Convert to fraction form
    187,918.32/281,891.31 = 81,405.61/x
  3. Step 3: Cross multiply
    187,918.32x = 281,891.31 × 81,405.61
  4. Step 4: Simplify right side
    187,918.32x = 22,947,533,721.11
  5. Step 5: Solve for x
    x = 22,947,533,721.11/187,918.32
  6. Step 6: Final answer
    x = 122,114.41

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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.