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Finding the Fourth Proportional to 100,303.01, 150,512.84 and 79,113.41

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Solution

The fourth proportional to 100,303.01, 150,512.84 and 79,113.41 is: 118,716.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,303.01 : 150,512.84 = 79,113.41 : x
  2. Step 2: Convert to fraction form
    100,303.01/150,512.84 = 79,113.41/x
  3. Step 3: Cross multiply
    100,303.01x = 150,512.84 × 79,113.41
  4. Step 4: Simplify right side
    100,303.01x = 11,907,583,625.62
  5. Step 5: Solve for x
    x = 11,907,583,625.62/100,303.01
  6. Step 6: Final answer
    x = 118,716.11

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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.