Home / 135,217.20-202,825.80-85,353.60

Finding the Fourth Proportional to 135,217.20, 202,825.80 and 85,353.60

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Solution

The fourth proportional to 135,217.20, 202,825.80 and 85,353.60 is: 128,030.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,217.20 : 202,825.80 = 85,353.60 : x
  2. Step 2: Convert to fraction form
    135,217.20/202,825.80 = 85,353.60/x
  3. Step 3: Cross multiply
    135,217.20x = 202,825.80 × 85,353.60
  4. Step 4: Simplify right side
    135,217.20x = 17,311,912,202.88
  5. Step 5: Solve for x
    x = 17,311,912,202.88/135,217.20
  6. Step 6: Final answer
    x = 128,030.40

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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.