Home / 129,968.80-195,183.60-100,458.40

Finding the Fourth Proportional to 129,968.80, 195,183.60 and 100,458.40

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Solution

The fourth proportional to 129,968.80, 195,183.60 and 100,458.40 is: 150,865.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,968.80 : 195,183.60 = 100,458.40 : x
  2. Step 2: Convert to fraction form
    129,968.80/195,183.60 = 100,458.40/x
  3. Step 3: Cross multiply
    129,968.80x = 195,183.60 × 100,458.40
  4. Step 4: Simplify right side
    129,968.80x = 19,607,832,162.24
  5. Step 5: Solve for x
    x = 19,607,832,162.24/129,968.80
  6. Step 6: Final answer
    x = 150,865.69

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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.