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Finding the Fourth Proportional to 143,605.73, 214,808.60 and 100,908.17

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Solution

The fourth proportional to 143,605.73, 214,808.60 and 100,908.17 is: 150,940.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,605.73 : 214,808.60 = 100,908.17 : x
  2. Step 2: Convert to fraction form
    143,605.73/214,808.60 = 100,908.17/x
  3. Step 3: Cross multiply
    143,605.73x = 214,808.60 × 100,908.17
  4. Step 4: Simplify right side
    143,605.73x = 21,675,942,710.02
  5. Step 5: Solve for x
    x = 21,675,942,710.02/143,605.73
  6. Step 6: Final answer
    x = 150,940.65

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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.