Home / 139,562.13-192,589.87-79,136.84

Finding the Fourth Proportional to 139,562.13, 192,589.87 and 79,136.84

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Solution

The fourth proportional to 139,562.13, 192,589.87 and 79,136.84 is: 109,205.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,562.13 : 192,589.87 = 79,136.84 : x
  2. Step 2: Convert to fraction form
    139,562.13/192,589.87 = 79,136.84/x
  3. Step 3: Cross multiply
    139,562.13x = 192,589.87 × 79,136.84
  4. Step 4: Simplify right side
    139,562.13x = 15,240,953,727.81
  5. Step 5: Solve for x
    x = 15,240,953,727.81/139,562.13
  6. Step 6: Final answer
    x = 109,205.51

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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.