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Finding the Fourth Proportional to 143,329.40, 214,913.10 and 54,585.80

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Solution

The fourth proportional to 143,329.40, 214,913.10 and 54,585.80 is: 81,847.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,329.40 : 214,913.10 = 54,585.80 : x
  2. Step 2: Convert to fraction form
    143,329.40/214,913.10 = 54,585.80/x
  3. Step 3: Cross multiply
    143,329.40x = 214,913.10 × 54,585.80
  4. Step 4: Simplify right side
    143,329.40x = 11,731,203,493.98
  5. Step 5: Solve for x
    x = 11,731,203,493.98/143,329.40
  6. Step 6: Final answer
    x = 81,847.85

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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.