Home / 111,000.20-166,500.30-100,891.40

Finding the Fourth Proportional to 111,000.20, 166,500.30 and 100,891.40

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Solution

The fourth proportional to 111,000.20, 166,500.30 and 100,891.40 is: 151,337.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,000.20 : 166,500.30 = 100,891.40 : x
  2. Step 2: Convert to fraction form
    111,000.20/166,500.30 = 100,891.40/x
  3. Step 3: Cross multiply
    111,000.20x = 166,500.30 × 100,891.40
  4. Step 4: Simplify right side
    111,000.20x = 16,798,448,367.42
  5. Step 5: Solve for x
    x = 16,798,448,367.42/111,000.20
  6. Step 6: Final answer
    x = 151,337.10

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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.