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Finding the Fourth Proportional to 129,879.72, 194,775.84 and 104,860.44

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Solution

The fourth proportional to 129,879.72, 194,775.84 and 104,860.44 is: 157,255.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,879.72 : 194,775.84 = 104,860.44 : x
  2. Step 2: Convert to fraction form
    129,879.72/194,775.84 = 104,860.44/x
  3. Step 3: Cross multiply
    129,879.72x = 194,775.84 × 104,860.44
  4. Step 4: Simplify right side
    129,879.72x = 20,424,280,283.77
  5. Step 5: Solve for x
    x = 20,424,280,283.77/129,879.72
  6. Step 6: Final answer
    x = 157,255.35

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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.