Home / 209,187.12-313,604.37-90,769.44

Finding the Fourth Proportional to 209,187.12, 313,604.37 and 90,769.44

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Solution

The fourth proportional to 209,187.12, 313,604.37 and 90,769.44 is: 136,077.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,187.12 : 313,604.37 = 90,769.44 : x
  2. Step 2: Convert to fraction form
    209,187.12/313,604.37 = 90,769.44/x
  3. Step 3: Cross multiply
    209,187.12x = 313,604.37 × 90,769.44
  4. Step 4: Simplify right side
    209,187.12x = 28,465,693,046.45
  5. Step 5: Solve for x
    x = 28,465,693,046.45/209,187.12
  6. Step 6: Final answer
    x = 136,077.66

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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.