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Finding the Fourth Proportional to 143,364.60, 214,787.70 and 126,775.80

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Solution

The fourth proportional to 143,364.60, 214,787.70 and 126,775.80 is: 189,934.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,364.60 : 214,787.70 = 126,775.80 : x
  2. Step 2: Convert to fraction form
    143,364.60/214,787.70 = 126,775.80/x
  3. Step 3: Cross multiply
    143,364.60x = 214,787.70 × 126,775.80
  4. Step 4: Simplify right side
    143,364.60x = 27,229,882,497.66
  5. Step 5: Solve for x
    x = 27,229,882,497.66/143,364.60
  6. Step 6: Final answer
    x = 189,934.49

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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.