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Finding the Fourth Proportional to 133,012.40, 199,528.20 and 80,308.40

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Solution

The fourth proportional to 133,012.40, 199,528.20 and 80,308.40 is: 120,468.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,012.40 : 199,528.20 = 80,308.40 : x
  2. Step 2: Convert to fraction form
    133,012.40/199,528.20 = 80,308.40/x
  3. Step 3: Cross multiply
    133,012.40x = 199,528.20 × 80,308.40
  4. Step 4: Simplify right side
    133,012.40x = 16,023,790,496.88
  5. Step 5: Solve for x
    x = 16,023,790,496.88/133,012.40
  6. Step 6: Final answer
    x = 120,468.40

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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.