Home / 129,308.20-193,847.10-76,661.80

Finding the Fourth Proportional to 129,308.20, 193,847.10 and 76,661.80

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Solution

The fourth proportional to 129,308.20, 193,847.10 and 76,661.80 is: 114,924.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,308.20 : 193,847.10 = 76,661.80 : x
  2. Step 2: Convert to fraction form
    129,308.20/193,847.10 = 76,661.80/x
  3. Step 3: Cross multiply
    129,308.20x = 193,847.10 × 76,661.80
  4. Step 4: Simplify right side
    129,308.20x = 14,860,667,610.78
  5. Step 5: Solve for x
    x = 14,860,667,610.78/129,308.20
  6. Step 6: Final answer
    x = 114,924.40

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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.