Home / 128,538.37-192,846.93-57,520.77

Finding the Fourth Proportional to 128,538.37, 192,846.93 and 57,520.77

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Solution

The fourth proportional to 128,538.37, 192,846.93 and 57,520.77 is: 86,298.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,538.37 : 192,846.93 = 57,520.77 : x
  2. Step 2: Convert to fraction form
    128,538.37/192,846.93 = 57,520.77/x
  3. Step 3: Cross multiply
    128,538.37x = 192,846.93 × 57,520.77
  4. Step 4: Simplify right side
    128,538.37x = 11,092,703,905.74
  5. Step 5: Solve for x
    x = 11,092,703,905.74/128,538.37
  6. Step 6: Final answer
    x = 86,298.78

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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.