Home / 129,270.50-194,087.34-66,135.89

Finding the Fourth Proportional to 129,270.50, 194,087.34 and 66,135.89

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Solution

The fourth proportional to 129,270.50, 194,087.34 and 66,135.89 is: 99,296.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,270.50 : 194,087.34 = 66,135.89 : x
  2. Step 2: Convert to fraction form
    129,270.50/194,087.34 = 66,135.89/x
  3. Step 3: Cross multiply
    129,270.50x = 194,087.34 × 66,135.89
  4. Step 4: Simplify right side
    129,270.50x = 12,836,139,453.85
  5. Step 5: Solve for x
    x = 12,836,139,453.85/129,270.50
  6. Step 6: Final answer
    x = 99,296.74

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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.