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Finding the Fourth Proportional to 144,809.40, 217,214.10 and 82,601.40

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Solution

The fourth proportional to 144,809.40, 217,214.10 and 82,601.40 is: 123,902.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,809.40 : 217,214.10 = 82,601.40 : x
  2. Step 2: Convert to fraction form
    144,809.40/217,214.10 = 82,601.40/x
  3. Step 3: Cross multiply
    144,809.40x = 217,214.10 × 82,601.40
  4. Step 4: Simplify right side
    144,809.40x = 17,942,188,759.74
  5. Step 5: Solve for x
    x = 17,942,188,759.74/144,809.40
  6. Step 6: Final answer
    x = 123,902.10

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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.