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Finding the Fourth Proportional to 143,888.52, 198,563.44 and 79,363.76

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Solution

The fourth proportional to 143,888.52, 198,563.44 and 79,363.76 is: 109,520.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,888.52 : 198,563.44 = 79,363.76 : x
  2. Step 2: Convert to fraction form
    143,888.52/198,563.44 = 79,363.76/x
  3. Step 3: Cross multiply
    143,888.52x = 198,563.44 × 79,363.76
  4. Step 4: Simplify right side
    143,888.52x = 15,758,740,800.12
  5. Step 5: Solve for x
    x = 15,758,740,800.12/143,888.52
  6. Step 6: Final answer
    x = 109,520.49

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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.