Home / 100,519.41-138,716.91-55,200.33

Finding the Fourth Proportional to 100,519.41, 138,716.91 and 55,200.33

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Solution

The fourth proportional to 100,519.41, 138,716.91 and 55,200.33 is: 76,176.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,519.41 : 138,716.91 = 55,200.33 : x
  2. Step 2: Convert to fraction form
    100,519.41/138,716.91 = 55,200.33/x
  3. Step 3: Cross multiply
    100,519.41x = 138,716.91 × 55,200.33
  4. Step 4: Simplify right side
    100,519.41x = 7,657,219,208.58
  5. Step 5: Solve for x
    x = 7,657,219,208.58/100,519.41
  6. Step 6: Final answer
    x = 76,176.52

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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.