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Finding the Fourth Proportional to 129,479.80, 194,226.10 and 67,271.80

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Solution

The fourth proportional to 129,479.80, 194,226.10 and 67,271.80 is: 100,911.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,479.80 : 194,226.10 = 67,271.80 : x
  2. Step 2: Convert to fraction form
    129,479.80/194,226.10 = 67,271.80/x
  3. Step 3: Cross multiply
    129,479.80x = 194,226.10 × 67,271.80
  4. Step 4: Simplify right side
    129,479.80x = 13,065,939,353.98
  5. Step 5: Solve for x
    x = 13,065,939,353.98/129,479.80
  6. Step 6: Final answer
    x = 100,911.03

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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.