Home / 139,509.39-192,518.94-79,085.62

Finding the Fourth Proportional to 139,509.39, 192,518.94 and 79,085.62

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Solution

The fourth proportional to 139,509.39, 192,518.94 and 79,085.62 is: 109,135.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,509.39 : 192,518.94 = 79,085.62 : x
  2. Step 2: Convert to fraction form
    139,509.39/192,518.94 = 79,085.62/x
  3. Step 3: Cross multiply
    139,509.39x = 192,518.94 × 79,085.62
  4. Step 4: Simplify right side
    139,509.39x = 15,225,479,731.64
  5. Step 5: Solve for x
    x = 15,225,479,731.64/139,509.39
  6. Step 6: Final answer
    x = 109,135.88

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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.