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Finding the Fourth Proportional to 143,276.80, 214,915.20 and 92,757.10

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Solution

The fourth proportional to 143,276.80, 214,915.20 and 92,757.10 is: 139,135.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,276.80 : 214,915.20 = 92,757.10 : x
  2. Step 2: Convert to fraction form
    143,276.80/214,915.20 = 92,757.10/x
  3. Step 3: Cross multiply
    143,276.80x = 214,915.20 × 92,757.10
  4. Step 4: Simplify right side
    143,276.80x = 19,934,910,697.92
  5. Step 5: Solve for x
    x = 19,934,910,697.92/143,276.80
  6. Step 6: Final answer
    x = 139,135.65

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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.