Home / 100,223.44-138,308.35-55,511.44

Finding the Fourth Proportional to 100,223.44, 138,308.35 and 55,511.44

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Solution

The fourth proportional to 100,223.44, 138,308.35 and 55,511.44 is: 76,605.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,223.44 : 138,308.35 = 55,511.44 : x
  2. Step 2: Convert to fraction form
    100,223.44/138,308.35 = 55,511.44/x
  3. Step 3: Cross multiply
    100,223.44x = 138,308.35 × 55,511.44
  4. Step 4: Simplify right side
    100,223.44x = 7,677,695,187.97
  5. Step 5: Solve for x
    x = 7,677,695,187.97/100,223.44
  6. Step 6: Final answer
    x = 76,605.79

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1.5x scale

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.