Home / 100,249.22-138,343.86-54,930.08

Finding the Fourth Proportional to 100,249.22, 138,343.86 and 54,930.08

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Solution

The fourth proportional to 100,249.22, 138,343.86 and 54,930.08 is: 75,803.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,249.22 : 138,343.86 = 54,930.08 : x
  2. Step 2: Convert to fraction form
    100,249.22/138,343.86 = 54,930.08/x
  3. Step 3: Cross multiply
    100,249.22x = 138,343.86 × 54,930.08
  4. Step 4: Simplify right side
    100,249.22x = 7,599,239,297.31
  5. Step 5: Solve for x
    x = 7,599,239,297.31/100,249.22
  6. Step 6: Final answer
    x = 75,803.48

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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.