Home / 128,067.66-176,717.07-71,481.42

Finding the Fourth Proportional to 128,067.66, 176,717.07 and 71,481.42

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Solution

The fourth proportional to 128,067.66, 176,717.07 and 71,481.42 is: 98,635.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,067.66 : 176,717.07 = 71,481.42 : x
  2. Step 2: Convert to fraction form
    128,067.66/176,717.07 = 71,481.42/x
  3. Step 3: Cross multiply
    128,067.66x = 176,717.07 × 71,481.42
  4. Step 4: Simplify right side
    128,067.66x = 12,631,987,101.84
  5. Step 5: Solve for x
    x = 12,631,987,101.84/128,067.66
  6. Step 6: Final answer
    x = 98,635.26

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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.