Home / 135,621.18-203,408.55-35,782.40

Finding the Fourth Proportional to 135,621.18, 203,408.55 and 35,782.40

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Solution

The fourth proportional to 135,621.18, 203,408.55 and 35,782.40 is: 53,667.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,621.18 : 203,408.55 = 35,782.40 : x
  2. Step 2: Convert to fraction form
    135,621.18/203,408.55 = 35,782.40/x
  3. Step 3: Cross multiply
    135,621.18x = 203,408.55 × 35,782.40
  4. Step 4: Simplify right side
    135,621.18x = 7,278,446,608.04
  5. Step 5: Solve for x
    x = 7,278,446,608.04/135,621.18
  6. Step 6: Final answer
    x = 53,667.48

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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.