Home / 128,633.11-192,846.62-61,131.26

Finding the Fourth Proportional to 128,633.11, 192,846.62 and 61,131.26

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Solution

The fourth proportional to 128,633.11, 192,846.62 and 61,131.26 is: 91,647.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,633.11 : 192,846.62 = 61,131.26 : x
  2. Step 2: Convert to fraction form
    128,633.11/192,846.62 = 61,131.26/x
  3. Step 3: Cross multiply
    128,633.11x = 192,846.62 × 61,131.26
  4. Step 4: Simplify right side
    128,633.11x = 11,788,956,561.68
  5. Step 5: Solve for x
    x = 11,788,956,561.68/128,633.11
  6. Step 6: Final answer
    x = 91,647.92

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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.