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Finding the Fourth Proportional to 143,963.77, 198,685.43 and 80,323.69

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Solution

The fourth proportional to 143,963.77, 198,685.43 and 80,323.69 is: 110,855.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,963.77 : 198,685.43 = 80,323.69 : x
  2. Step 2: Convert to fraction form
    143,963.77/198,685.43 = 80,323.69/x
  3. Step 3: Cross multiply
    143,963.77x = 198,685.43 × 80,323.69
  4. Step 4: Simplify right side
    143,963.77x = 15,959,146,886.84
  5. Step 5: Solve for x
    x = 15,959,146,886.84/143,963.77
  6. Step 6: Final answer
    x = 110,855.30

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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.