Home / 135,008.20-202,512.30-90,771.40

Finding the Fourth Proportional to 135,008.20, 202,512.30 and 90,771.40

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Solution

The fourth proportional to 135,008.20, 202,512.30 and 90,771.40 is: 136,157.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,008.20 : 202,512.30 = 90,771.40 : x
  2. Step 2: Convert to fraction form
    135,008.20/202,512.30 = 90,771.40/x
  3. Step 3: Cross multiply
    135,008.20x = 202,512.30 × 90,771.40
  4. Step 4: Simplify right side
    135,008.20x = 18,382,324,988.22
  5. Step 5: Solve for x
    x = 18,382,324,988.22/135,008.20
  6. Step 6: Final answer
    x = 136,157.10

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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.