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Finding the Fourth Proportional to 145,287.67, 217,944.03 and 40,106.65

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Solution

The fourth proportional to 145,287.67, 217,944.03 and 40,106.65 is: 60,163.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,287.67 : 217,944.03 = 40,106.65 : x
  2. Step 2: Convert to fraction form
    145,287.67/217,944.03 = 40,106.65/x
  3. Step 3: Cross multiply
    145,287.67x = 217,944.03 × 40,106.65
  4. Step 4: Simplify right side
    145,287.67x = 8,741,004,930.80
  5. Step 5: Solve for x
    x = 8,741,004,930.80/145,287.67
  6. Step 6: Final answer
    x = 60,163.43

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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.