Home / 129,771.40-194,657.10-121,898.20

Finding the Fourth Proportional to 129,771.40, 194,657.10 and 121,898.20

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Solution

The fourth proportional to 129,771.40, 194,657.10 and 121,898.20 is: 182,847.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,771.40 : 194,657.10 = 121,898.20 : x
  2. Step 2: Convert to fraction form
    129,771.40/194,657.10 = 121,898.20/x
  3. Step 3: Cross multiply
    129,771.40x = 194,657.10 × 121,898.20
  4. Step 4: Simplify right side
    129,771.40x = 23,728,350,107.22
  5. Step 5: Solve for x
    x = 23,728,350,107.22/129,771.40
  6. Step 6: Final answer
    x = 182,847.30

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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.