Home / 128,278.05-192,335.57-112,514.73

Finding the Fourth Proportional to 128,278.05, 192,335.57 and 112,514.73

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Solution

The fourth proportional to 128,278.05, 192,335.57 and 112,514.73 is: 168,700.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,278.05 : 192,335.57 = 112,514.73 : x
  2. Step 2: Convert to fraction form
    128,278.05/192,335.57 = 112,514.73/x
  3. Step 3: Cross multiply
    128,278.05x = 192,335.57 × 112,514.73
  4. Step 4: Simplify right side
    128,278.05x = 21,640,585,653.52
  5. Step 5: Solve for x
    x = 21,640,585,653.52/128,278.05
  6. Step 6: Final answer
    x = 168,700.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.