Home / 128,540.28-192,784.50-35,033.88

Finding the Fourth Proportional to 128,540.28, 192,784.50 and 35,033.88

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Solution

The fourth proportional to 128,540.28, 192,784.50 and 35,033.88 is: 52,543.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,540.28 : 192,784.50 = 35,033.88 : x
  2. Step 2: Convert to fraction form
    128,540.28/192,784.50 = 35,033.88/x
  3. Step 3: Cross multiply
    128,540.28x = 192,784.50 × 35,033.88
  4. Step 4: Simplify right side
    128,540.28x = 6,753,989,038.86
  5. Step 5: Solve for x
    x = 6,753,989,038.86/128,540.28
  6. Step 6: Final answer
    x = 52,543.76

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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.