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Finding the Fourth Proportional to 129,859.98, 194,795.52 and 50,991.30

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Solution

The fourth proportional to 129,859.98, 194,795.52 and 50,991.30 is: 76,489.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,859.98 : 194,795.52 = 50,991.30 : x
  2. Step 2: Convert to fraction form
    129,859.98/194,795.52 = 50,991.30/x
  3. Step 3: Cross multiply
    129,859.98x = 194,795.52 × 50,991.30
  4. Step 4: Simplify right side
    129,859.98x = 9,932,876,798.98
  5. Step 5: Solve for x
    x = 9,932,876,798.98/129,859.98
  6. Step 6: Final answer
    x = 76,489.13

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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.