Home / 129,823.20-194,720.40-106,408.80

Finding the Fourth Proportional to 129,823.20, 194,720.40 and 106,408.80

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Solution

The fourth proportional to 129,823.20, 194,720.40 and 106,408.80 is: 159,601.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,823.20 : 194,720.40 = 106,408.80 : x
  2. Step 2: Convert to fraction form
    129,823.20/194,720.40 = 106,408.80/x
  3. Step 3: Cross multiply
    129,823.20x = 194,720.40 × 106,408.80
  4. Step 4: Simplify right side
    129,823.20x = 20,719,964,099.52
  5. Step 5: Solve for x
    x = 20,719,964,099.52/129,823.20
  6. Step 6: Final answer
    x = 159,601.40

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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.