Home / 209,120.62-313,504.56-90,702.76

Finding the Fourth Proportional to 209,120.62, 313,504.56 and 90,702.76

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Solution

The fourth proportional to 209,120.62, 313,504.56 and 90,702.76 is: 135,977.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,120.62 : 313,504.56 = 90,702.76 : x
  2. Step 2: Convert to fraction form
    209,120.62/313,504.56 = 90,702.76/x
  3. Step 3: Cross multiply
    209,120.62x = 313,504.56 × 90,702.76
  4. Step 4: Simplify right side
    209,120.62x = 28,435,728,864.59
  5. Step 5: Solve for x
    x = 28,435,728,864.59/209,120.62
  6. Step 6: Final answer
    x = 135,977.64

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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.