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Finding the Fourth Proportional to 128,537.37, 192,845.43 and 57,519.77

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Solution

The fourth proportional to 128,537.37, 192,845.43 and 57,519.77 is: 86,297.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,537.37 : 192,845.43 = 57,519.77 : x
  2. Step 2: Convert to fraction form
    128,537.37/192,845.43 = 57,519.77/x
  3. Step 3: Cross multiply
    128,537.37x = 192,845.43 × 57,519.77
  4. Step 4: Simplify right side
    128,537.37x = 11,092,423,814.92
  5. Step 5: Solve for x
    x = 11,092,423,814.92/128,537.37
  6. Step 6: Final answer
    x = 86,297.27

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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.