Home / 187,919.07-281,892.44-81,406.36

Finding the Fourth Proportional to 187,919.07, 281,892.44 and 81,406.36

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Solution

The fourth proportional to 187,919.07, 281,892.44 and 81,406.36 is: 122,115.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,919.07 : 281,892.44 = 81,406.36 : x
  2. Step 2: Convert to fraction form
    187,919.07/281,892.44 = 81,406.36/x
  3. Step 3: Cross multiply
    187,919.07x = 281,892.44 × 81,406.36
  4. Step 4: Simplify right side
    187,919.07x = 22,947,837,451.92
  5. Step 5: Solve for x
    x = 22,947,837,451.92/187,919.07
  6. Step 6: Final answer
    x = 122,115.54

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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.