Home / 128,161.16-192,260.13-39,422.15

Finding the Fourth Proportional to 128,161.16, 192,260.13 and 39,422.15

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Solution

The fourth proportional to 128,161.16, 192,260.13 and 39,422.15 is: 59,138.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,161.16 : 192,260.13 = 39,422.15 : x
  2. Step 2: Convert to fraction form
    128,161.16/192,260.13 = 39,422.15/x
  3. Step 3: Cross multiply
    128,161.16x = 192,260.13 × 39,422.15
  4. Step 4: Simplify right side
    128,161.16x = 7,579,308,016.70
  5. Step 5: Solve for x
    x = 7,579,308,016.70/128,161.16
  6. Step 6: Final answer
    x = 59,138.88

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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.