Home / 209,109.66-288,572.40-113,616.60

Finding the Fourth Proportional to 209,109.66, 288,572.40 and 113,616.60

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Solution

The fourth proportional to 209,109.66, 288,572.40 and 113,616.60 is: 156,791.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,109.66 : 288,572.40 = 113,616.60 : x
  2. Step 2: Convert to fraction form
    209,109.66/288,572.40 = 113,616.60/x
  3. Step 3: Cross multiply
    209,109.66x = 288,572.40 × 113,616.60
  4. Step 4: Simplify right side
    209,109.66x = 32,786,614,941.84
  5. Step 5: Solve for x
    x = 32,786,614,941.84/209,109.66
  6. Step 6: Final answer
    x = 156,791.49

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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.