Home / 135,747.80-203,718.90-56,918.60

Finding the Fourth Proportional to 135,747.80, 203,718.90 and 56,918.60

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Solution

The fourth proportional to 135,747.80, 203,718.90 and 56,918.60 is: 85,418.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,747.80 : 203,718.90 = 56,918.60 : x
  2. Step 2: Convert to fraction form
    135,747.80/203,718.90 = 56,918.60/x
  3. Step 3: Cross multiply
    135,747.80x = 203,718.90 × 56,918.60
  4. Step 4: Simplify right side
    135,747.80x = 11,595,394,581.54
  5. Step 5: Solve for x
    x = 11,595,394,581.54/135,747.80
  6. Step 6: Final answer
    x = 85,418.66

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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.