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Finding the Fourth Proportional to 128,519.32, 192,774.17 and 33,748.64

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Solution

The fourth proportional to 128,519.32, 192,774.17 and 33,748.64 is: 50,621.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,519.32 : 192,774.17 = 33,748.64 : x
  2. Step 2: Convert to fraction form
    128,519.32/192,774.17 = 33,748.64/x
  3. Step 3: Cross multiply
    128,519.32x = 192,774.17 × 33,748.64
  4. Step 4: Simplify right side
    128,519.32x = 6,505,866,630.94
  5. Step 5: Solve for x
    x = 6,505,866,630.94/128,519.32
  6. Step 6: Final answer
    x = 50,621.70

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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.