Home / 139,228-192,134.64-79,623.52

Finding the Fourth Proportional to 139,228, 192,134.64 and 79,623.52

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Solution

The fourth proportional to 139,228, 192,134.64 and 79,623.52 is: 109,880.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,228 : 192,134.64 = 79,623.52 : x
  2. Step 2: Convert to fraction form
    139,228/192,134.64 = 79,623.52/x
  3. Step 3: Cross multiply
    139,228x = 192,134.64 × 79,623.52
  4. Step 4: Simplify right side
    139,228x = 15,298,436,350.73
  5. Step 5: Solve for x
    x = 15,298,436,350.73/139,228
  6. Step 6: Final answer
    x = 109,880.46

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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.