Home / 135,612.20-203,418.30-65,498.60

Finding the Fourth Proportional to 135,612.20, 203,418.30 and 65,498.60

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Solution

The fourth proportional to 135,612.20, 203,418.30 and 65,498.60 is: 98,247.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,612.20 : 203,418.30 = 65,498.60 : x
  2. Step 2: Convert to fraction form
    135,612.20/203,418.30 = 65,498.60/x
  3. Step 3: Cross multiply
    135,612.20x = 203,418.30 × 65,498.60
  4. Step 4: Simplify right side
    135,612.20x = 13,323,613,864.38
  5. Step 5: Solve for x
    x = 13,323,613,864.38/135,612.20
  6. Step 6: Final answer
    x = 98,247.90

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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.