Home / 209,163.77-288,647.82-113,670.45

Finding the Fourth Proportional to 209,163.77, 288,647.82 and 113,670.45

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Solution

The fourth proportional to 209,163.77, 288,647.82 and 113,670.45 is: 156,866.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,163.77 : 288,647.82 = 113,670.45 : x
  2. Step 2: Convert to fraction form
    209,163.77/288,647.82 = 113,670.45/x
  3. Step 3: Cross multiply
    209,163.77x = 288,647.82 × 113,670.45
  4. Step 4: Simplify right side
    209,163.77x = 32,810,727,590.92
  5. Step 5: Solve for x
    x = 32,810,727,590.92/209,163.77
  6. Step 6: Final answer
    x = 156,866.21

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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.