Home / 139,738.57-192,832.84-76,076.21

Finding the Fourth Proportional to 139,738.57, 192,832.84 and 76,076.21

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Solution

The fourth proportional to 139,738.57, 192,832.84 and 76,076.21 is: 104,981.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,738.57 : 192,832.84 = 76,076.21 : x
  2. Step 2: Convert to fraction form
    139,738.57/192,832.84 = 76,076.21/x
  3. Step 3: Cross multiply
    139,738.57x = 192,832.84 × 76,076.21
  4. Step 4: Simplify right side
    139,738.57x = 14,669,991,630.74
  5. Step 5: Solve for x
    x = 14,669,991,630.74/139,738.57
  6. Step 6: Final answer
    x = 104,981.69

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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.