Home / 139,546.87-192,579.74-79,942.39

Finding the Fourth Proportional to 139,546.87, 192,579.74 and 79,942.39

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Solution

The fourth proportional to 139,546.87, 192,579.74 and 79,942.39 is: 110,323.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,546.87 : 192,579.74 = 79,942.39 : x
  2. Step 2: Convert to fraction form
    139,546.87/192,579.74 = 79,942.39/x
  3. Step 3: Cross multiply
    139,546.87x = 192,579.74 × 79,942.39
  4. Step 4: Simplify right side
    139,546.87x = 15,395,284,681.18
  5. Step 5: Solve for x
    x = 15,395,284,681.18/139,546.87
  6. Step 6: Final answer
    x = 110,323.40

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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.