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Finding the Fourth Proportional to 143,951.66, 198,653.64 and 80,293.58

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Solution

The fourth proportional to 143,951.66, 198,653.64 and 80,293.58 is: 110,805.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,951.66 : 198,653.64 = 80,293.58 : x
  2. Step 2: Convert to fraction form
    143,951.66/198,653.64 = 80,293.58/x
  3. Step 3: Cross multiply
    143,951.66x = 198,653.64 × 80,293.58
  4. Step 4: Simplify right side
    143,951.66x = 15,950,611,935.63
  5. Step 5: Solve for x
    x = 15,950,611,935.63/143,951.66
  6. Step 6: Final answer
    x = 110,805.34

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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.