Home / 133,016.20-199,548.60-54,138.40

Finding the Fourth Proportional to 133,016.20, 199,548.60 and 54,138.40

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Solution

The fourth proportional to 133,016.20, 199,548.60 and 54,138.40 is: 81,217.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,016.20 : 199,548.60 = 54,138.40 : x
  2. Step 2: Convert to fraction form
    133,016.20/199,548.60 = 54,138.40/x
  3. Step 3: Cross multiply
    133,016.20x = 199,548.60 × 54,138.40
  4. Step 4: Simplify right side
    133,016.20x = 10,803,241,926.24
  5. Step 5: Solve for x
    x = 10,803,241,926.24/133,016.20
  6. Step 6: Final answer
    x = 81,217.49

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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.