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Finding the Fourth Proportional to 189,103.80, 283,655.70 and 100,311.60

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Solution

The fourth proportional to 189,103.80, 283,655.70 and 100,311.60 is: 150,467.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,103.80 : 283,655.70 = 100,311.60 : x
  2. Step 2: Convert to fraction form
    189,103.80/283,655.70 = 100,311.60/x
  3. Step 3: Cross multiply
    189,103.80x = 283,655.70 × 100,311.60
  4. Step 4: Simplify right side
    189,103.80x = 28,453,957,116.12
  5. Step 5: Solve for x
    x = 28,453,957,116.12/189,103.80
  6. Step 6: Final answer
    x = 150,467.40

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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.