Home / 128,260.72-192,391.08-34,766.47

Finding the Fourth Proportional to 128,260.72, 192,391.08 and 34,766.47

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Solution

The fourth proportional to 128,260.72, 192,391.08 and 34,766.47 is: 52,149.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,260.72 : 192,391.08 = 34,766.47 : x
  2. Step 2: Convert to fraction form
    128,260.72/192,391.08 = 34,766.47/x
  3. Step 3: Cross multiply
    128,260.72x = 192,391.08 × 34,766.47
  4. Step 4: Simplify right side
    128,260.72x = 6,688,758,711.09
  5. Step 5: Solve for x
    x = 6,688,758,711.09/128,260.72
  6. Step 6: Final answer
    x = 52,149.71

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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.