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Finding the Fourth Proportional to 135,903.20, 203,854.80 and 130,144.10

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Solution

The fourth proportional to 135,903.20, 203,854.80 and 130,144.10 is: 195,216.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,903.20 : 203,854.80 = 130,144.10 : x
  2. Step 2: Convert to fraction form
    135,903.20/203,854.80 = 130,144.10/x
  3. Step 3: Cross multiply
    135,903.20x = 203,854.80 × 130,144.10
  4. Step 4: Simplify right side
    135,903.20x = 26,530,499,476.68
  5. Step 5: Solve for x
    x = 26,530,499,476.68/135,903.20
  6. Step 6: Final answer
    x = 195,216.15

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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.