Home / 143,136.20-214,704.30-131,731.40

Finding the Fourth Proportional to 143,136.20, 214,704.30 and 131,731.40

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Solution

The fourth proportional to 143,136.20, 214,704.30 and 131,731.40 is: 197,597.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,136.20 : 214,704.30 = 131,731.40 : x
  2. Step 2: Convert to fraction form
    143,136.20/214,704.30 = 131,731.40/x
  3. Step 3: Cross multiply
    143,136.20x = 214,704.30 × 131,731.40
  4. Step 4: Simplify right side
    143,136.20x = 28,283,298,025.02
  5. Step 5: Solve for x
    x = 28,283,298,025.02/143,136.20
  6. Step 6: Final answer
    x = 197,597.10

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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.