Home / 128,541.96-192,738.96-49,645.80

Finding the Fourth Proportional to 128,541.96, 192,738.96 and 49,645.80

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Solution

The fourth proportional to 128,541.96, 192,738.96 and 49,645.80 is: 74,440.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,541.96 : 192,738.96 = 49,645.80 : x
  2. Step 2: Convert to fraction form
    128,541.96/192,738.96 = 49,645.80/x
  3. Step 3: Cross multiply
    128,541.96x = 192,738.96 × 49,645.80
  4. Step 4: Simplify right side
    128,541.96x = 9,568,679,860.37
  5. Step 5: Solve for x
    x = 9,568,679,860.37/128,541.96
  6. Step 6: Final answer
    x = 74,440.13

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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.