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Finding the Fourth Proportional to 135,703.35, 203,873.09 and 128,034.75

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Solution

The fourth proportional to 135,703.35, 203,873.09 and 128,034.75 is: 192,352.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,703.35 : 203,873.09 = 128,034.75 : x
  2. Step 2: Convert to fraction form
    135,703.35/203,873.09 = 128,034.75/x
  3. Step 3: Cross multiply
    135,703.35x = 203,873.09 × 128,034.75
  4. Step 4: Simplify right side
    135,703.35x = 26,102,840,109.88
  5. Step 5: Solve for x
    x = 26,102,840,109.88/135,703.35
  6. Step 6: Final answer
    x = 192,352.22

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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.