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Finding the Fourth Proportional to 144,705.67, 217,132.53 and 68,889.88

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Solution

The fourth proportional to 144,705.67, 217,132.53 and 68,889.88 is: 103,370.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,705.67 : 217,132.53 = 68,889.88 : x
  2. Step 2: Convert to fraction form
    144,705.67/217,132.53 = 68,889.88/x
  3. Step 3: Cross multiply
    144,705.67x = 217,132.53 × 68,889.88
  4. Step 4: Simplify right side
    144,705.67x = 14,958,232,505.68
  5. Step 5: Solve for x
    x = 14,958,232,505.68/144,705.67
  6. Step 6: Final answer
    x = 103,370.05

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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.