Home / 129,489,138.40-194,202,603.60-74,783,423.20

Finding the Fourth Proportional to 129,489,138.40, 194,202,603.60 and 74,783,423.20

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Solution

The fourth proportional to 129,489,138.40, 194,202,603.60 and 74,783,423.20 is: 112,157,171.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,489,138.40 : 194,202,603.60 = 74,783,423.20 : x
  2. Step 2: Convert to fraction form
    129,489,138.40/194,202,603.60 = 74,783,423.20/x
  3. Step 3: Cross multiply
    129,489,138.40x = 194,202,603.60 × 74,783,423.20
  4. Step 4: Simplify right side
    129,489,138.40x = 14,523,135,491,560,644
  5. Step 5: Solve for x
    x = 14,523,135,491,560,644/129,489,138.40
  6. Step 6: Final answer
    x = 112,157,171.41

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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.