Home / 235,514.24-325,012-128,086.72

Finding the Fourth Proportional to 235,514.24, 325,012 and 128,086.72

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Solution

The fourth proportional to 235,514.24, 325,012 and 128,086.72 is: 176,760.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,514.24 : 325,012 = 128,086.72 : x
  2. Step 2: Convert to fraction form
    235,514.24/325,012 = 128,086.72/x
  3. Step 3: Cross multiply
    235,514.24x = 325,012 × 128,086.72
  4. Step 4: Simplify right side
    235,514.24x = 41,629,721,040.64
  5. Step 5: Solve for x
    x = 41,629,721,040.64/235,514.24
  6. Step 6: Final answer
    x = 176,760.95

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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.