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Finding the Fourth Proportional to 192,907.10, 289,317.45 and 126,811.10

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Solution

The fourth proportional to 192,907.10, 289,317.45 and 126,811.10 is: 190,188.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,907.10 : 289,317.45 = 126,811.10 : x
  2. Step 2: Convert to fraction form
    192,907.10/289,317.45 = 126,811.10/x
  3. Step 3: Cross multiply
    192,907.10x = 289,317.45 × 126,811.10
  4. Step 4: Simplify right side
    192,907.10x = 36,688,664,083.70
  5. Step 5: Solve for x
    x = 36,688,664,083.70/192,907.10
  6. Step 6: Final answer
    x = 190,188.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.