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Finding the Fourth Proportional to 128,517.84, 192,739.77 and 44,274.60

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Solution

The fourth proportional to 128,517.84, 192,739.77 and 44,274.60 is: 66,399.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,517.84 : 192,739.77 = 44,274.60 : x
  2. Step 2: Convert to fraction form
    128,517.84/192,739.77 = 44,274.60/x
  3. Step 3: Cross multiply
    128,517.84x = 192,739.77 × 44,274.60
  4. Step 4: Simplify right side
    128,517.84x = 8,533,476,220.84
  5. Step 5: Solve for x
    x = 8,533,476,220.84/128,517.84
  6. Step 6: Final answer
    x = 66,399.16

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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.