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Finding the Fourth Proportional to 144,425.62, 199,309.98 and 80,762.05

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Solution

The fourth proportional to 144,425.62, 199,309.98 and 80,762.05 is: 111,453.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,425.62 : 199,309.98 = 80,762.05 : x
  2. Step 2: Convert to fraction form
    144,425.62/199,309.98 = 80,762.05/x
  3. Step 3: Cross multiply
    144,425.62x = 199,309.98 × 80,762.05
  4. Step 4: Simplify right side
    144,425.62x = 16,096,682,570.26
  5. Step 5: Solve for x
    x = 16,096,682,570.26/144,425.62
  6. Step 6: Final answer
    x = 111,453.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.