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Finding the Fourth Proportional to 128,270.96, 192,406.44 and 34,774.28

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Solution

The fourth proportional to 128,270.96, 192,406.44 and 34,774.28 is: 52,161.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,270.96 : 192,406.44 = 34,774.28 : x
  2. Step 2: Convert to fraction form
    128,270.96/192,406.44 = 34,774.28/x
  3. Step 3: Cross multiply
    128,270.96x = 192,406.44 × 34,774.28
  4. Step 4: Simplify right side
    128,270.96x = 6,690,795,418.36
  5. Step 5: Solve for x
    x = 6,690,795,418.36/128,270.96
  6. Step 6: Final answer
    x = 52,161.42

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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.