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Finding the Fourth Proportional to 129,408.39, 194,112.60 and 59,287.71

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Solution

The fourth proportional to 129,408.39, 194,112.60 and 59,287.71 is: 88,931.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,408.39 : 194,112.60 = 59,287.71 : x
  2. Step 2: Convert to fraction form
    129,408.39/194,112.60 = 59,287.71/x
  3. Step 3: Cross multiply
    129,408.39x = 194,112.60 × 59,287.71
  4. Step 4: Simplify right side
    129,408.39x = 11,508,491,536.15
  5. Step 5: Solve for x
    x = 11,508,491,536.15/129,408.39
  6. Step 6: Final answer
    x = 88,931.57

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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.