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Finding the Fourth Proportional to 128,399.00, 192,494.10 and 53,574.87

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Solution

The fourth proportional to 128,399.00, 192,494.10 and 53,574.87 is: 80,318.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,399.00 : 192,494.10 = 53,574.87 : x
  2. Step 2: Convert to fraction form
    128,399.00/192,494.10 = 53,574.87/x
  3. Step 3: Cross multiply
    128,399.00x = 192,494.10 × 53,574.87
  4. Step 4: Simplify right side
    128,399.00x = 10,312,846,383.27
  5. Step 5: Solve for x
    x = 10,312,846,383.27/128,399.00
  6. Step 6: Final answer
    x = 80,318.75

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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.