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Finding the Fourth Proportional to 144,090.44, 198,838.26 and 80,426.84

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Solution

The fourth proportional to 144,090.44, 198,838.26 and 80,426.84 is: 110,985.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,090.44 : 198,838.26 = 80,426.84 : x
  2. Step 2: Convert to fraction form
    144,090.44/198,838.26 = 80,426.84/x
  3. Step 3: Cross multiply
    144,090.44x = 198,838.26 × 80,426.84
  4. Step 4: Simplify right side
    144,090.44x = 15,991,932,922.90
  5. Step 5: Solve for x
    x = 15,991,932,922.90/144,090.44
  6. Step 6: Final answer
    x = 110,985.38

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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.