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Finding the Fourth Proportional to 128,544.54, 192,797.82 and 75,261.12

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Solution

The fourth proportional to 128,544.54, 192,797.82 and 75,261.12 is: 112,880.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,544.54 : 192,797.82 = 75,261.12 : x
  2. Step 2: Convert to fraction form
    128,544.54/192,797.82 = 75,261.12/x
  3. Step 3: Cross multiply
    128,544.54x = 192,797.82 × 75,261.12
  4. Step 4: Simplify right side
    128,544.54x = 14,510,179,866.76
  5. Step 5: Solve for x
    x = 14,510,179,866.76/128,544.54
  6. Step 6: Final answer
    x = 112,880.56

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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.