Home / 129,130.56-193,520.88-66,844.80

Finding the Fourth Proportional to 129,130.56, 193,520.88 and 66,844.80

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Solution

The fourth proportional to 129,130.56, 193,520.88 and 66,844.80 is: 100,176.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,130.56 : 193,520.88 = 66,844.80 : x
  2. Step 2: Convert to fraction form
    129,130.56/193,520.88 = 66,844.80/x
  3. Step 3: Cross multiply
    129,130.56x = 193,520.88 × 66,844.80
  4. Step 4: Simplify right side
    129,130.56x = 12,935,864,519.42
  5. Step 5: Solve for x
    x = 12,935,864,519.42/129,130.56
  6. Step 6: Final answer
    x = 100,176.63

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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.