Home / 209,120.38-313,504.18-90,702.52

Finding the Fourth Proportional to 209,120.38, 313,504.18 and 90,702.52

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Solution

The fourth proportional to 209,120.38, 313,504.18 and 90,702.52 is: 135,977.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,120.38 : 313,504.18 = 90,702.52 : x
  2. Step 2: Convert to fraction form
    209,120.38/313,504.18 = 90,702.52/x
  3. Step 3: Cross multiply
    209,120.38x = 313,504.18 × 90,702.52
  4. Step 4: Simplify right side
    209,120.38x = 28,435,619,156.53
  5. Step 5: Solve for x
    x = 28,435,619,156.53/209,120.38
  6. Step 6: Final answer
    x = 135,977.27

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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.