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Finding the Fourth Proportional to 128,600.94, 192,901.43 and 53,680.22

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Solution

The fourth proportional to 128,600.94, 192,901.43 and 53,680.22 is: 80,520.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,600.94 : 192,901.43 = 53,680.22 : x
  2. Step 2: Convert to fraction form
    128,600.94/192,901.43 = 53,680.22/x
  3. Step 3: Cross multiply
    128,600.94x = 192,901.43 × 53,680.22
  4. Step 4: Simplify right side
    128,600.94x = 10,354,990,236.21
  5. Step 5: Solve for x
    x = 10,354,990,236.21/128,600.94
  6. Step 6: Final answer
    x = 80,520.33

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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.