Home / 100,511.10-150,766.65-30,381.30

Finding the Fourth Proportional to 100,511.10, 150,766.65 and 30,381.30

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Solution

The fourth proportional to 100,511.10, 150,766.65 and 30,381.30 is: 45,571.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,511.10 : 150,766.65 = 30,381.30 : x
  2. Step 2: Convert to fraction form
    100,511.10/150,766.65 = 30,381.30/x
  3. Step 3: Cross multiply
    100,511.10x = 150,766.65 × 30,381.30
  4. Step 4: Simplify right side
    100,511.10x = 4,580,486,823.65
  5. Step 5: Solve for x
    x = 4,580,486,823.65/100,511.10
  6. Step 6: Final answer
    x = 45,571.95

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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.