Home / 128,280.55-192,339.32-112,517.24

Finding the Fourth Proportional to 128,280.55, 192,339.32 and 112,517.24

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Solution

The fourth proportional to 128,280.55, 192,339.32 and 112,517.24 is: 168,704.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,280.55 : 192,339.32 = 112,517.24 : x
  2. Step 2: Convert to fraction form
    128,280.55/192,339.32 = 112,517.24/x
  3. Step 3: Cross multiply
    128,280.55x = 192,339.32 × 112,517.24
  4. Step 4: Simplify right side
    128,280.55x = 21,641,489,429.88
  5. Step 5: Solve for x
    x = 21,641,489,429.88/128,280.55
  6. Step 6: Final answer
    x = 168,704.37

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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.