Home / 135,966.60-203,949.90-85,884.30

Finding the Fourth Proportional to 135,966.60, 203,949.90 and 85,884.30

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Solution

The fourth proportional to 135,966.60, 203,949.90 and 85,884.30 is: 128,826.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,966.60 : 203,949.90 = 85,884.30 : x
  2. Step 2: Convert to fraction form
    135,966.60/203,949.90 = 85,884.30/x
  3. Step 3: Cross multiply
    135,966.60x = 203,949.90 × 85,884.30
  4. Step 4: Simplify right side
    135,966.60x = 17,516,094,396.57
  5. Step 5: Solve for x
    x = 17,516,094,396.57/135,966.60
  6. Step 6: Final answer
    x = 128,826.45

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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.