Home / 100,858.41-139,183.61-55,535.54

Finding the Fourth Proportional to 100,858.41, 139,183.61 and 55,535.54

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Solution

The fourth proportional to 100,858.41, 139,183.61 and 55,535.54 is: 76,638.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,858.41 : 139,183.61 = 55,535.54 : x
  2. Step 2: Convert to fraction form
    100,858.41/139,183.61 = 55,535.54/x
  3. Step 3: Cross multiply
    100,858.41x = 139,183.61 × 55,535.54
  4. Step 4: Simplify right side
    100,858.41x = 7,729,635,966.90
  5. Step 5: Solve for x
    x = 7,729,635,966.90/100,858.41
  6. Step 6: Final answer
    x = 76,638.49

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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.