Home / 100,867.41-139,195.89-55,544.49

Finding the Fourth Proportional to 100,867.41, 139,195.89 and 55,544.49

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Solution

The fourth proportional to 100,867.41, 139,195.89 and 55,544.49 is: 76,650.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,867.41 : 139,195.89 = 55,544.49 : x
  2. Step 2: Convert to fraction form
    100,867.41/139,195.89 = 55,544.49/x
  3. Step 3: Cross multiply
    100,867.41x = 139,195.89 × 55,544.49
  4. Step 4: Simplify right side
    100,867.41x = 7,731,564,720.15
  5. Step 5: Solve for x
    x = 7,731,564,720.15/100,867.41
  6. Step 6: Final answer
    x = 76,650.77

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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.