Home / 129,907.20-195,006.60-100,455.60

Finding the Fourth Proportional to 129,907.20, 195,006.60 and 100,455.60

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Solution

The fourth proportional to 129,907.20, 195,006.60 and 100,455.60 is: 150,796.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,907.20 : 195,006.60 = 100,455.60 : x
  2. Step 2: Convert to fraction form
    129,907.20/195,006.60 = 100,455.60/x
  3. Step 3: Cross multiply
    129,907.20x = 195,006.60 × 100,455.60
  4. Step 4: Simplify right side
    129,907.20x = 19,589,505,006.96
  5. Step 5: Solve for x
    x = 19,589,505,006.96/129,907.20
  6. Step 6: Final answer
    x = 150,796.15

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1.5x scale

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.