Home / 105,198.46-145,077.72-82,231.32

Finding the Fourth Proportional to 105,198.46, 145,077.72 and 82,231.32

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Solution

The fourth proportional to 105,198.46, 145,077.72 and 82,231.32 is: 113,404.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,198.46 : 145,077.72 = 82,231.32 : x
  2. Step 2: Convert to fraction form
    105,198.46/145,077.72 = 82,231.32/x
  3. Step 3: Cross multiply
    105,198.46x = 145,077.72 × 82,231.32
  4. Step 4: Simplify right side
    105,198.46x = 11,929,932,418.19
  5. Step 5: Solve for x
    x = 11,929,932,418.19/105,198.46
  6. Step 6: Final answer
    x = 113,404.06

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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.