Home / 128,349.18-192,363.30-61,771.44

Finding the Fourth Proportional to 128,349.18, 192,363.30 and 61,771.44

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Solution

The fourth proportional to 128,349.18, 192,363.30 and 61,771.44 is: 92,579.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,349.18 : 192,363.30 = 61,771.44 : x
  2. Step 2: Convert to fraction form
    128,349.18/192,363.30 = 61,771.44/x
  3. Step 3: Cross multiply
    128,349.18x = 192,363.30 × 61,771.44
  4. Step 4: Simplify right side
    128,349.18x = 11,882,558,044.15
  5. Step 5: Solve for x
    x = 11,882,558,044.15/128,349.18
  6. Step 6: Final answer
    x = 92,579.93

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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.