Home / 128,282.54-176,843.66-89,922.56

Finding the Fourth Proportional to 128,282.54, 176,843.66 and 89,922.56

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Solution

The fourth proportional to 128,282.54, 176,843.66 and 89,922.56 is: 123,962.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,282.54 : 176,843.66 = 89,922.56 : x
  2. Step 2: Convert to fraction form
    128,282.54/176,843.66 = 89,922.56/x
  3. Step 3: Cross multiply
    128,282.54x = 176,843.66 × 89,922.56
  4. Step 4: Simplify right side
    128,282.54x = 15,902,234,626.97
  5. Step 5: Solve for x
    x = 15,902,234,626.97/128,282.54
  6. Step 6: Final answer
    x = 123,962.58

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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.