Home / 139,230.09-192,093.39-81,851.04

Finding the Fourth Proportional to 139,230.09, 192,093.39 and 81,851.04

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Solution

The fourth proportional to 139,230.09, 192,093.39 and 81,851.04 is: 112,928.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,230.09 : 192,093.39 = 81,851.04 : x
  2. Step 2: Convert to fraction form
    139,230.09/192,093.39 = 81,851.04/x
  3. Step 3: Cross multiply
    139,230.09x = 192,093.39 × 81,851.04
  4. Step 4: Simplify right side
    139,230.09x = 15,723,043,748.63
  5. Step 5: Solve for x
    x = 15,723,043,748.63/139,230.09
  6. Step 6: Final answer
    x = 112,928.49

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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.