Home / 128,255.92-192,387.16-60,772.12

Finding the Fourth Proportional to 128,255.92, 192,387.16 and 60,772.12

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Solution

The fourth proportional to 128,255.92, 192,387.16 and 60,772.12 is: 91,159.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,255.92 : 192,387.16 = 60,772.12 : x
  2. Step 2: Convert to fraction form
    128,255.92/192,387.16 = 60,772.12/x
  3. Step 3: Cross multiply
    128,255.92x = 192,387.16 × 60,772.12
  4. Step 4: Simplify right side
    128,255.92x = 11,691,775,573.98
  5. Step 5: Solve for x
    x = 11,691,775,573.98/128,255.92
  6. Step 6: Final answer
    x = 91,159.73

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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.