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Finding the Fourth Proportional to 143,173.19, 214,664.99 and 68,304.89

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Solution

The fourth proportional to 143,173.19, 214,664.99 and 68,304.89 is: 102,412.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,173.19 : 214,664.99 = 68,304.89 : x
  2. Step 2: Convert to fraction form
    143,173.19/214,664.99 = 68,304.89/x
  3. Step 3: Cross multiply
    143,173.19x = 214,664.99 × 68,304.89
  4. Step 4: Simplify right side
    143,173.19x = 14,662,667,113.95
  5. Step 5: Solve for x
    x = 14,662,667,113.95/143,173.19
  6. Step 6: Final answer
    x = 102,412.10

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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.