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Finding the Fourth Proportional to 143,274.80, 214,912.20 and 92,755.10

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Solution

The fourth proportional to 143,274.80, 214,912.20 and 92,755.10 is: 139,132.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,274.80 : 214,912.20 = 92,755.10 : x
  2. Step 2: Convert to fraction form
    143,274.80/214,912.20 = 92,755.10/x
  3. Step 3: Cross multiply
    143,274.80x = 214,912.20 × 92,755.10
  4. Step 4: Simplify right side
    143,274.80x = 19,934,202,602.22
  5. Step 5: Solve for x
    x = 19,934,202,602.22/143,274.80
  6. Step 6: Final answer
    x = 139,132.65

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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.