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Finding the Fourth Proportional to 144,804.70, 199,844.58 and 81,153.28

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Solution

The fourth proportional to 144,804.70, 199,844.58 and 81,153.28 is: 111,999.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,804.70 : 199,844.58 = 81,153.28 : x
  2. Step 2: Convert to fraction form
    144,804.70/199,844.58 = 81,153.28/x
  3. Step 3: Cross multiply
    144,804.70x = 199,844.58 × 81,153.28
  4. Step 4: Simplify right side
    144,804.70x = 16,218,043,157.22
  5. Step 5: Solve for x
    x = 16,218,043,157.22/144,804.70
  6. Step 6: Final answer
    x = 111,999.43

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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.