Home / 128,100.21-192,157.31-53,227.93

Finding the Fourth Proportional to 128,100.21, 192,157.31 and 53,227.93

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Solution

The fourth proportional to 128,100.21, 192,157.31 and 53,227.93 is: 79,844.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,100.21 : 192,157.31 = 53,227.93 : x
  2. Step 2: Convert to fraction form
    128,100.21/192,157.31 = 53,227.93/x
  3. Step 3: Cross multiply
    128,100.21x = 192,157.31 × 53,227.93
  4. Step 4: Simplify right side
    128,100.21x = 10,228,134,884.88
  5. Step 5: Solve for x
    x = 10,228,134,884.88/128,100.21
  6. Step 6: Final answer
    x = 79,844.79

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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.