Home / 100,419.13-138,579.76-55,096.29

Finding the Fourth Proportional to 100,419.13, 138,579.76 and 55,096.29

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Solution

The fourth proportional to 100,419.13, 138,579.76 and 55,096.29 is: 76,033.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,419.13 : 138,579.76 = 55,096.29 : x
  2. Step 2: Convert to fraction form
    100,419.13/138,579.76 = 55,096.29/x
  3. Step 3: Cross multiply
    100,419.13x = 138,579.76 × 55,096.29
  4. Step 4: Simplify right side
    100,419.13x = 7,635,230,645.09
  5. Step 5: Solve for x
    x = 7,635,230,645.09/100,419.13
  6. Step 6: Final answer
    x = 76,033.63

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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.