Home / 78,183.55-117,275.35-19,018.85

Finding the Fourth Proportional to 78,183.55, 117,275.35 and 19,018.85

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Solution

The fourth proportional to 78,183.55, 117,275.35 and 19,018.85 is: 28,528.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,183.55 : 117,275.35 = 19,018.85 : x
  2. Step 2: Convert to fraction form
    78,183.55/117,275.35 = 19,018.85/x
  3. Step 3: Cross multiply
    78,183.55x = 117,275.35 × 19,018.85
  4. Step 4: Simplify right side
    78,183.55x = 2,230,442,195.25
  5. Step 5: Solve for x
    x = 2,230,442,195.25/78,183.55
  6. Step 6: Final answer
    x = 28,528.28

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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.