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Finding the Fourth Proportional to 128,604.28, 192,919.28 and 44,353.35

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Solution

The fourth proportional to 128,604.28, 192,919.28 and 44,353.35 is: 66,534.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,604.28 : 192,919.28 = 44,353.35 : x
  2. Step 2: Convert to fraction form
    128,604.28/192,919.28 = 44,353.35/x
  3. Step 3: Cross multiply
    128,604.28x = 192,919.28 × 44,353.35
  4. Step 4: Simplify right side
    128,604.28x = 8,556,616,347.59
  5. Step 5: Solve for x
    x = 8,556,616,347.59/128,604.28
  6. Step 6: Final answer
    x = 66,534.46

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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.