Home / 128,429.78-192,625.23-34,942.82

Finding the Fourth Proportional to 128,429.78, 192,625.23 and 34,942.82

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Solution

The fourth proportional to 128,429.78, 192,625.23 and 34,942.82 is: 52,408.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,429.78 : 192,625.23 = 34,942.82 : x
  2. Step 2: Convert to fraction form
    128,429.78/192,625.23 = 34,942.82/x
  3. Step 3: Cross multiply
    128,429.78x = 192,625.23 × 34,942.82
  4. Step 4: Simplify right side
    128,429.78x = 6,730,868,739.35
  5. Step 5: Solve for x
    x = 6,730,868,739.35/128,429.78
  6. Step 6: Final answer
    x = 52,408.94

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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.