Home / 209,229.21-313,771.10-89,281.31

Finding the Fourth Proportional to 209,229.21, 313,771.10 and 89,281.31

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Solution

The fourth proportional to 209,229.21, 313,771.10 and 89,281.31 is: 133,890.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,229.21 : 313,771.10 = 89,281.31 : x
  2. Step 2: Convert to fraction form
    209,229.21/313,771.10 = 89,281.31/x
  3. Step 3: Cross multiply
    209,229.21x = 313,771.10 × 89,281.31
  4. Step 4: Simplify right side
    209,229.21x = 28,013,892,832.88
  5. Step 5: Solve for x
    x = 28,013,892,832.88/209,229.21
  6. Step 6: Final answer
    x = 133,890.93

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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.