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Finding the Fourth Proportional to 143,551.49, 198,099.11 and 79,889.29

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Solution

The fourth proportional to 143,551.49, 198,099.11 and 79,889.29 is: 110,246.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,551.49 : 198,099.11 = 79,889.29 : x
  2. Step 2: Convert to fraction form
    143,551.49/198,099.11 = 79,889.29/x
  3. Step 3: Cross multiply
    143,551.49x = 198,099.11 × 79,889.29
  4. Step 4: Simplify right side
    143,551.49x = 15,825,996,727.32
  5. Step 5: Solve for x
    x = 15,825,996,727.32/143,551.49
  6. Step 6: Final answer
    x = 110,246.13

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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.