Home / 78,269.58-117,403.97-19,105.56

Finding the Fourth Proportional to 78,269.58, 117,403.97 and 19,105.56

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Solution

The fourth proportional to 78,269.58, 117,403.97 and 19,105.56 is: 28,658.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,269.58 : 117,403.97 = 19,105.56 : x
  2. Step 2: Convert to fraction form
    78,269.58/117,403.97 = 19,105.56/x
  3. Step 3: Cross multiply
    78,269.58x = 117,403.97 × 19,105.56
  4. Step 4: Simplify right side
    78,269.58x = 2,243,068,497.55
  5. Step 5: Solve for x
    x = 2,243,068,497.55/78,269.58
  6. Step 6: Final answer
    x = 28,658.24

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1.5x scale

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.