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Finding the Fourth Proportional to 129,195.95, 193,821.87 and 39,231.27

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Solution

The fourth proportional to 129,195.95, 193,821.87 and 39,231.27 is: 58,855.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,195.95 : 193,821.87 = 39,231.27 : x
  2. Step 2: Convert to fraction form
    129,195.95/193,821.87 = 39,231.27/x
  3. Step 3: Cross multiply
    129,195.95x = 193,821.87 × 39,231.27
  4. Step 4: Simplify right side
    129,195.95x = 7,603,878,840.71
  5. Step 5: Solve for x
    x = 7,603,878,840.71/129,195.95
  6. Step 6: Final answer
    x = 58,855.40

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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.