Home / 128,012.20-192,043.07-49,120.29

Finding the Fourth Proportional to 128,012.20, 192,043.07 and 49,120.29

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Solution

The fourth proportional to 128,012.20, 192,043.07 and 49,120.29 is: 73,689.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,012.20 : 192,043.07 = 49,120.29 : x
  2. Step 2: Convert to fraction form
    128,012.20/192,043.07 = 49,120.29/x
  3. Step 3: Cross multiply
    128,012.20x = 192,043.07 × 49,120.29
  4. Step 4: Simplify right side
    128,012.20x = 9,433,211,229.49
  5. Step 5: Solve for x
    x = 9,433,211,229.49/128,012.20
  6. Step 6: Final answer
    x = 73,689.94

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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.