Home / 112,636.08-155,499.48-76,879.44

Finding the Fourth Proportional to 112,636.08, 155,499.48 and 76,879.44

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Solution

The fourth proportional to 112,636.08, 155,499.48 and 76,879.44 is: 106,135.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,636.08 : 155,499.48 = 76,879.44 : x
  2. Step 2: Convert to fraction form
    112,636.08/155,499.48 = 76,879.44/x
  3. Step 3: Cross multiply
    112,636.08x = 155,499.48 × 76,879.44
  4. Step 4: Simplify right side
    112,636.08x = 11,954,712,942.69
  5. Step 5: Solve for x
    x = 11,954,712,942.69/112,636.08
  6. Step 6: Final answer
    x = 106,135.73

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1.5x scale

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.