Home / 128,321.47-192,480.09-38,364.39

Finding the Fourth Proportional to 128,321.47, 192,480.09 and 38,364.39

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Solution

The fourth proportional to 128,321.47, 192,480.09 and 38,364.39 is: 57,545.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,321.47 : 192,480.09 = 38,364.39 : x
  2. Step 2: Convert to fraction form
    128,321.47/192,480.09 = 38,364.39/x
  3. Step 3: Cross multiply
    128,321.47x = 192,480.09 × 38,364.39
  4. Step 4: Simplify right side
    128,321.47x = 7,384,381,240.00
  5. Step 5: Solve for x
    x = 7,384,381,240.00/128,321.47
  6. Step 6: Final answer
    x = 57,545.95

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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.