Home / 143,141.20-214,711.80-131,736.40

Finding the Fourth Proportional to 143,141.20, 214,711.80 and 131,736.40

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Solution

The fourth proportional to 143,141.20, 214,711.80 and 131,736.40 is: 197,604.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,141.20 : 214,711.80 = 131,736.40 : x
  2. Step 2: Convert to fraction form
    143,141.20/214,711.80 = 131,736.40/x
  3. Step 3: Cross multiply
    143,141.20x = 214,711.80 × 131,736.40
  4. Step 4: Simplify right side
    143,141.20x = 28,285,359,569.52
  5. Step 5: Solve for x
    x = 28,285,359,569.52/143,141.20
  6. Step 6: Final answer
    x = 197,604.60

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1.5x scale

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.