Home / 138,743.58-191,466.15-75,081.38

Finding the Fourth Proportional to 138,743.58, 191,466.15 and 75,081.38

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Solution

The fourth proportional to 138,743.58, 191,466.15 and 75,081.38 is: 103,612.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,743.58 : 191,466.15 = 75,081.38 : x
  2. Step 2: Convert to fraction form
    138,743.58/191,466.15 = 75,081.38/x
  3. Step 3: Cross multiply
    138,743.58x = 191,466.15 × 75,081.38
  4. Step 4: Simplify right side
    138,743.58x = 14,375,542,765.29
  5. Step 5: Solve for x
    x = 14,375,542,765.29/138,743.58
  6. Step 6: Final answer
    x = 103,612.31

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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.