Home / 100,067.64-138,106.86-57,625.08

Finding the Fourth Proportional to 100,067.64, 138,106.86 and 57,625.08

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Solution

The fourth proportional to 100,067.64, 138,106.86 and 57,625.08 is: 79,530.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,067.64 : 138,106.86 = 57,625.08 : x
  2. Step 2: Convert to fraction form
    100,067.64/138,106.86 = 57,625.08/x
  3. Step 3: Cross multiply
    100,067.64x = 138,106.86 × 57,625.08
  4. Step 4: Simplify right side
    100,067.64x = 7,958,418,856.05
  5. Step 5: Solve for x
    x = 7,958,418,856.05/100,067.64
  6. Step 6: Final answer
    x = 79,530.39

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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.