Home / 120,067.02-165,678.39-66,348.84

Finding the Fourth Proportional to 120,067.02, 165,678.39 and 66,348.84

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Solution

The fourth proportional to 120,067.02, 165,678.39 and 66,348.84 is: 91,553.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,067.02 : 165,678.39 = 66,348.84 : x
  2. Step 2: Convert to fraction form
    120,067.02/165,678.39 = 66,348.84/x
  3. Step 3: Cross multiply
    120,067.02x = 165,678.39 × 66,348.84
  4. Step 4: Simplify right side
    120,067.02x = 10,992,568,161.18
  5. Step 5: Solve for x
    x = 10,992,568,161.18/120,067.02
  6. Step 6: Final answer
    x = 91,553.60

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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.