Home / 128,067.37-192,236.33-71,955.43

Finding the Fourth Proportional to 128,067.37, 192,236.33 and 71,955.43

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Solution

The fourth proportional to 128,067.37, 192,236.33 and 71,955.43 is: 108,009.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,067.37 : 192,236.33 = 71,955.43 : x
  2. Step 2: Convert to fraction form
    128,067.37/192,236.33 = 71,955.43/x
  3. Step 3: Cross multiply
    128,067.37x = 192,236.33 × 71,955.43
  4. Step 4: Simplify right side
    128,067.37x = 13,832,447,426.99
  5. Step 5: Solve for x
    x = 13,832,447,426.99/128,067.37
  6. Step 6: Final answer
    x = 108,009.15

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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.