Home / 128,249.60-192,365.28-39,493.86

Finding the Fourth Proportional to 128,249.60, 192,365.28 and 39,493.86

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Solution

The fourth proportional to 128,249.60, 192,365.28 and 39,493.86 is: 59,237.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,249.60 : 192,365.28 = 39,493.86 : x
  2. Step 2: Convert to fraction form
    128,249.60/192,365.28 = 39,493.86/x
  3. Step 3: Cross multiply
    128,249.60x = 192,365.28 × 39,493.86
  4. Step 4: Simplify right side
    128,249.60x = 7,597,247,437.18
  5. Step 5: Solve for x
    x = 7,597,247,437.18/128,249.60
  6. Step 6: Final answer
    x = 59,237.98

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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.