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Finding the Fourth Proportional to 128,471.22, 192,596.04 and 49,640.76

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Solution

The fourth proportional to 128,471.22, 192,596.04 and 49,640.76 is: 74,418.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,471.22 : 192,596.04 = 49,640.76 : x
  2. Step 2: Convert to fraction form
    128,471.22/192,596.04 = 49,640.76/x
  3. Step 3: Cross multiply
    128,471.22x = 192,596.04 × 49,640.76
  4. Step 4: Simplify right side
    128,471.22x = 9,560,613,798.59
  5. Step 5: Solve for x
    x = 9,560,613,798.59/128,471.22
  6. Step 6: Final answer
    x = 74,418.33

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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.