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Finding the Fourth Proportional to 128,504.72, 192,709.72 and 44,240.88

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Solution

The fourth proportional to 128,504.72, 192,709.72 and 44,240.88 is: 66,345.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,504.72 : 192,709.72 = 44,240.88 : x
  2. Step 2: Convert to fraction form
    128,504.72/192,709.72 = 44,240.88/x
  3. Step 3: Cross multiply
    128,504.72x = 192,709.72 × 44,240.88
  4. Step 4: Simplify right side
    128,504.72x = 8,525,647,597.35
  5. Step 5: Solve for x
    x = 8,525,647,597.35/128,504.72
  6. Step 6: Final answer
    x = 66,345.02

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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.