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Finding the Fourth Proportional to 143,817, 198,474.22 and 80,155.26

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Solution

The fourth proportional to 143,817, 198,474.22 and 80,155.26 is: 110,618.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,817 : 198,474.22 = 80,155.26 : x
  2. Step 2: Convert to fraction form
    143,817/198,474.22 = 80,155.26/x
  3. Step 3: Cross multiply
    143,817x = 198,474.22 × 80,155.26
  4. Step 4: Simplify right side
    143,817x = 15,908,752,707.40
  5. Step 5: Solve for x
    x = 15,908,752,707.40/143,817
  6. Step 6: Final answer
    x = 110,618.03

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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.