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Finding the Fourth Proportional to 129,859.35, 194,764.43 and 45,599.72

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Solution

The fourth proportional to 129,859.35, 194,764.43 and 45,599.72 is: 68,390.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,859.35 : 194,764.43 = 45,599.72 : x
  2. Step 2: Convert to fraction form
    129,859.35/194,764.43 = 45,599.72/x
  3. Step 3: Cross multiply
    129,859.35x = 194,764.43 × 45,599.72
  4. Step 4: Simplify right side
    129,859.35x = 8,881,202,272.14
  5. Step 5: Solve for x
    x = 8,881,202,272.14/129,859.35
  6. Step 6: Final answer
    x = 68,390.93

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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.