Home / 128,154.54-192,231.38-34,660.28

Finding the Fourth Proportional to 128,154.54, 192,231.38 and 34,660.28

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Solution

The fourth proportional to 128,154.54, 192,231.38 and 34,660.28 is: 51,990.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,154.54 : 192,231.38 = 34,660.28 : x
  2. Step 2: Convert to fraction form
    128,154.54/192,231.38 = 34,660.28/x
  3. Step 3: Cross multiply
    128,154.54x = 192,231.38 × 34,660.28
  4. Step 4: Simplify right side
    128,154.54x = 6,662,793,455.59
  5. Step 5: Solve for x
    x = 6,662,793,455.59/128,154.54
  6. Step 6: Final answer
    x = 51,990.30

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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.