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Finding the Fourth Proportional to 144,850.89, 199,893.60 and 81,188.70

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Solution

The fourth proportional to 144,850.89, 199,893.60 and 81,188.70 is: 112,040.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,850.89 : 199,893.60 = 81,188.70 : x
  2. Step 2: Convert to fraction form
    144,850.89/199,893.60 = 81,188.70/x
  3. Step 3: Cross multiply
    144,850.89x = 199,893.60 × 81,188.70
  4. Step 4: Simplify right side
    144,850.89x = 16,229,101,522.32
  5. Step 5: Solve for x
    x = 16,229,101,522.32/144,850.89
  6. Step 6: Final answer
    x = 112,040.05

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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.