Home / 139,738.54-192,839.13-76,076.32

Finding the Fourth Proportional to 139,738.54, 192,839.13 and 76,076.32

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Solution

The fourth proportional to 139,738.54, 192,839.13 and 76,076.32 is: 104,985.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,738.54 : 192,839.13 = 76,076.32 : x
  2. Step 2: Convert to fraction form
    139,738.54/192,839.13 = 76,076.32/x
  3. Step 3: Cross multiply
    139,738.54x = 192,839.13 × 76,076.32
  4. Step 4: Simplify right side
    139,738.54x = 14,670,491,362.40
  5. Step 5: Solve for x
    x = 14,670,491,362.40/139,738.54
  6. Step 6: Final answer
    x = 104,985.29

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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.