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Finding the Fourth Proportional to 144,698.98, 199,686 and 80,169.58

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Solution

The fourth proportional to 144,698.98, 199,686 and 80,169.58 is: 110,634.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,698.98 : 199,686 = 80,169.58 : x
  2. Step 2: Convert to fraction form
    144,698.98/199,686 = 80,169.58/x
  3. Step 3: Cross multiply
    144,698.98x = 199,686 × 80,169.58
  4. Step 4: Simplify right side
    144,698.98x = 16,008,742,751.88
  5. Step 5: Solve for x
    x = 16,008,742,751.88/144,698.98
  6. Step 6: Final answer
    x = 110,634.80

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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.