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Finding the Fourth Proportional to 128,310.56, 192,466 and 34,816.32

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Solution

The fourth proportional to 128,310.56, 192,466 and 34,816.32 is: 52,224.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,310.56 : 192,466 = 34,816.32 : x
  2. Step 2: Convert to fraction form
    128,310.56/192,466 = 34,816.32/x
  3. Step 3: Cross multiply
    128,310.56x = 192,466 × 34,816.32
  4. Step 4: Simplify right side
    128,310.56x = 6,700,957,845.12
  5. Step 5: Solve for x
    x = 6,700,957,845.12/128,310.56
  6. Step 6: Final answer
    x = 52,224.52

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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.