Home / 128,516.22-192,640.68-49,684.59

Finding the Fourth Proportional to 128,516.22, 192,640.68 and 49,684.59

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Solution

The fourth proportional to 128,516.22, 192,640.68 and 49,684.59 is: 74,475.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,516.22 : 192,640.68 = 49,684.59 : x
  2. Step 2: Convert to fraction form
    128,516.22/192,640.68 = 49,684.59/x
  3. Step 3: Cross multiply
    128,516.22x = 192,640.68 × 49,684.59
  4. Step 4: Simplify right side
    128,516.22x = 9,571,273,203.12
  5. Step 5: Solve for x
    x = 9,571,273,203.12/128,516.22
  6. Step 6: Final answer
    x = 74,475.22

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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.