Home / 100,110.51-138,151.22-54,787.68

Finding the Fourth Proportional to 100,110.51, 138,151.22 and 54,787.68

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Solution

The fourth proportional to 100,110.51, 138,151.22 and 54,787.68 is: 75,606.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,110.51 : 138,151.22 = 54,787.68 : x
  2. Step 2: Convert to fraction form
    100,110.51/138,151.22 = 54,787.68/x
  3. Step 3: Cross multiply
    100,110.51x = 138,151.22 × 54,787.68
  4. Step 4: Simplify right side
    100,110.51x = 7,568,984,559.03
  5. Step 5: Solve for x
    x = 7,568,984,559.03/100,110.51
  6. Step 6: Final answer
    x = 75,606.29

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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.