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Finding the Fourth Proportional to 143,356.88, 197,826.36 and 79,693.04

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Solution

The fourth proportional to 143,356.88, 197,826.36 and 79,693.04 is: 109,972.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,356.88 : 197,826.36 = 79,693.04 : x
  2. Step 2: Convert to fraction form
    143,356.88/197,826.36 = 79,693.04/x
  3. Step 3: Cross multiply
    143,356.88x = 197,826.36 × 79,693.04
  4. Step 4: Simplify right side
    143,356.88x = 15,765,384,020.53
  5. Step 5: Solve for x
    x = 15,765,384,020.53/143,356.88
  6. Step 6: Final answer
    x = 109,972.99

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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.