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Finding the Fourth Proportional to 143,243.72, 214,762.72 and 67,299.46

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Solution

The fourth proportional to 143,243.72, 214,762.72 and 67,299.46 is: 100,900.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,243.72 : 214,762.72 = 67,299.46 : x
  2. Step 2: Convert to fraction form
    143,243.72/214,762.72 = 67,299.46/x
  3. Step 3: Cross multiply
    143,243.72x = 214,762.72 × 67,299.46
  4. Step 4: Simplify right side
    143,243.72x = 14,453,414,315.88
  5. Step 5: Solve for x
    x = 14,453,414,315.88/143,243.72
  6. Step 6: Final answer
    x = 100,900.86

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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.