Home / 139,736.57-192,830.09-76,074.21

Finding the Fourth Proportional to 139,736.57, 192,830.09 and 76,074.21

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Solution

The fourth proportional to 139,736.57, 192,830.09 and 76,074.21 is: 104,978.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,736.57 : 192,830.09 = 76,074.21 : x
  2. Step 2: Convert to fraction form
    139,736.57/192,830.09 = 76,074.21/x
  3. Step 3: Cross multiply
    139,736.57x = 192,830.09 × 76,074.21
  4. Step 4: Simplify right side
    139,736.57x = 14,669,396,380.61
  5. Step 5: Solve for x
    x = 14,669,396,380.61/139,736.57
  6. Step 6: Final answer
    x = 104,978.94

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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.