Home / 209,163.70-288,648.14-113,670.39

Finding the Fourth Proportional to 209,163.70, 288,648.14 and 113,670.39

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Solution

The fourth proportional to 209,163.70, 288,648.14 and 113,670.39 is: 156,866.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,163.70 : 288,648.14 = 113,670.39 : x
  2. Step 2: Convert to fraction form
    209,163.70/288,648.14 = 113,670.39/x
  3. Step 3: Cross multiply
    209,163.70x = 288,648.14 × 113,670.39
  4. Step 4: Simplify right side
    209,163.70x = 32,810,746,646.57
  5. Step 5: Solve for x
    x = 32,810,746,646.57/209,163.70
  6. Step 6: Final answer
    x = 156,866.35

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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.