Home / 209,131.41-288,600.79-113,638.11

Finding the Fourth Proportional to 209,131.41, 288,600.79 and 113,638.11

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Solution

The fourth proportional to 209,131.41, 288,600.79 and 113,638.11 is: 156,820.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,131.41 : 288,600.79 = 113,638.11 : x
  2. Step 2: Convert to fraction form
    209,131.41/288,600.79 = 113,638.11/x
  3. Step 3: Cross multiply
    209,131.41x = 288,600.79 × 113,638.11
  4. Step 4: Simplify right side
    209,131.41x = 32,796,048,320.11
  5. Step 5: Solve for x
    x = 32,796,048,320.11/209,131.41
  6. Step 6: Final answer
    x = 156,820.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.