Home / 112,739.78-168,879.94-53,395.54

Finding the Fourth Proportional to 112,739.78, 168,879.94 and 53,395.54

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Solution

The fourth proportional to 112,739.78, 168,879.94 and 53,395.54 is: 79,984.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,739.78 : 168,879.94 = 53,395.54 : x
  2. Step 2: Convert to fraction form
    112,739.78/168,879.94 = 53,395.54/x
  3. Step 3: Cross multiply
    112,739.78x = 168,879.94 × 53,395.54
  4. Step 4: Simplify right side
    112,739.78x = 9,017,435,591.47
  5. Step 5: Solve for x
    x = 9,017,435,591.47/112,739.78
  6. Step 6: Final answer
    x = 79,984.51

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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.