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Finding the Fourth Proportional to 198,486.65, 273,880.74 and 117,912.11

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Solution

The fourth proportional to 198,486.65, 273,880.74 and 117,912.11 is: 162,700.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,486.65 : 273,880.74 = 117,912.11 : x
  2. Step 2: Convert to fraction form
    198,486.65/273,880.74 = 117,912.11/x
  3. Step 3: Cross multiply
    198,486.65x = 273,880.74 × 117,912.11
  4. Step 4: Simplify right side
    198,486.65x = 32,293,855,014.53
  5. Step 5: Solve for x
    x = 32,293,855,014.53/198,486.65
  6. Step 6: Final answer
    x = 162,700.39

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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.