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Finding the Fourth Proportional to 128,480.43, 192,672.72 and 44,216.76

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Solution

The fourth proportional to 128,480.43, 192,672.72 and 44,216.76 is: 66,308.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,480.43 : 192,672.72 = 44,216.76 : x
  2. Step 2: Convert to fraction form
    128,480.43/192,672.72 = 44,216.76/x
  3. Step 3: Cross multiply
    128,480.43x = 192,672.72 × 44,216.76
  4. Step 4: Simplify right side
    128,480.43x = 8,519,363,418.79
  5. Step 5: Solve for x
    x = 8,519,363,418.79/128,480.43
  6. Step 6: Final answer
    x = 66,308.65

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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.