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Finding the Fourth Proportional to 143,078.84, 214,828.92 and 80,022.50

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Solution

The fourth proportional to 143,078.84, 214,828.92 and 80,022.50 is: 120,151.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,078.84 : 214,828.92 = 80,022.50 : x
  2. Step 2: Convert to fraction form
    143,078.84/214,828.92 = 80,022.50/x
  3. Step 3: Cross multiply
    143,078.84x = 214,828.92 × 80,022.50
  4. Step 4: Simplify right side
    143,078.84x = 17,191,147,250.70
  5. Step 5: Solve for x
    x = 17,191,147,250.70/143,078.84
  6. Step 6: Final answer
    x = 120,151.57

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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.