Home / 138,743.79-191,466.38-75,081.53

Finding the Fourth Proportional to 138,743.79, 191,466.38 and 75,081.53

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Solution

The fourth proportional to 138,743.79, 191,466.38 and 75,081.53 is: 103,612.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,743.79 : 191,466.38 = 75,081.53 : x
  2. Step 2: Convert to fraction form
    138,743.79/191,466.38 = 75,081.53/x
  3. Step 3: Cross multiply
    138,743.79x = 191,466.38 × 75,081.53
  4. Step 4: Simplify right side
    138,743.79x = 14,375,589,420.33
  5. Step 5: Solve for x
    x = 14,375,589,420.33/138,743.79
  6. Step 6: Final answer
    x = 103,612.49

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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.