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Finding the Fourth Proportional to 128,452.80, 192,669.60 and 53,553.60

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Solution

The fourth proportional to 128,452.80, 192,669.60 and 53,553.60 is: 80,326.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,452.80 : 192,669.60 = 53,553.60 : x
  2. Step 2: Convert to fraction form
    128,452.80/192,669.60 = 53,553.60/x
  3. Step 3: Cross multiply
    128,452.80x = 192,669.60 × 53,553.60
  4. Step 4: Simplify right side
    128,452.80x = 10,318,150,690.56
  5. Step 5: Solve for x
    x = 10,318,150,690.56/128,452.80
  6. Step 6: Final answer
    x = 80,326.40

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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.