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Finding the Fourth Proportional to 144,563.96, 199,499.28 and 80,907.68

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Solution

The fourth proportional to 144,563.96, 199,499.28 and 80,907.68 is: 111,653.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,563.96 : 199,499.28 = 80,907.68 : x
  2. Step 2: Convert to fraction form
    144,563.96/199,499.28 = 80,907.68/x
  3. Step 3: Cross multiply
    144,563.96x = 199,499.28 × 80,907.68
  4. Step 4: Simplify right side
    144,563.96x = 16,141,023,906.47
  5. Step 5: Solve for x
    x = 16,141,023,906.47/144,563.96
  6. Step 6: Final answer
    x = 111,653.17

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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.