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Finding the Fourth Proportional to 128,107.56, 192,160.62 and 43,868.46

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Solution

The fourth proportional to 128,107.56, 192,160.62 and 43,868.46 is: 65,802.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,107.56 : 192,160.62 = 43,868.46 : x
  2. Step 2: Convert to fraction form
    128,107.56/192,160.62 = 43,868.46/x
  3. Step 3: Cross multiply
    128,107.56x = 192,160.62 × 43,868.46
  4. Step 4: Simplify right side
    128,107.56x = 8,429,790,472.05
  5. Step 5: Solve for x
    x = 8,429,790,472.05/128,107.56
  6. Step 6: Final answer
    x = 65,802.44

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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.