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Finding the Fourth Proportional to 144,871.94, 199,922.48 and 81,208.37

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Solution

The fourth proportional to 144,871.94, 199,922.48 and 81,208.37 is: 112,067.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,871.94 : 199,922.48 = 81,208.37 : x
  2. Step 2: Convert to fraction form
    144,871.94/199,922.48 = 81,208.37/x
  3. Step 3: Cross multiply
    144,871.94x = 199,922.48 × 81,208.37
  4. Step 4: Simplify right side
    144,871.94x = 16,235,379,125.45
  5. Step 5: Solve for x
    x = 16,235,379,125.45/144,871.94
  6. Step 6: Final answer
    x = 112,067.10

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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.