Home / 100,984.41-139,352.18-55,662.75

Finding the Fourth Proportional to 100,984.41, 139,352.18 and 55,662.75

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Solution

The fourth proportional to 100,984.41, 139,352.18 and 55,662.75 is: 76,811.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,984.41 : 139,352.18 = 55,662.75 : x
  2. Step 2: Convert to fraction form
    100,984.41/139,352.18 = 55,662.75/x
  3. Step 3: Cross multiply
    100,984.41x = 139,352.18 × 55,662.75
  4. Step 4: Simplify right side
    100,984.41x = 7,756,725,278.98
  5. Step 5: Solve for x
    x = 7,756,725,278.98/100,984.41
  6. Step 6: Final answer
    x = 76,811.12

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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.