Home / 139,739.14-192,834.84-76,075.66

Finding the Fourth Proportional to 139,739.14, 192,834.84 and 76,075.66

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Solution

The fourth proportional to 139,739.14, 192,834.84 and 76,075.66 is: 104,981.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,739.14 : 192,834.84 = 76,075.66 : x
  2. Step 2: Convert to fraction form
    139,739.14/192,834.84 = 76,075.66/x
  3. Step 3: Cross multiply
    139,739.14x = 192,834.84 × 76,075.66
  4. Step 4: Simplify right side
    139,739.14x = 14,670,037,723.99
  5. Step 5: Solve for x
    x = 14,670,037,723.99/139,739.14
  6. Step 6: Final answer
    x = 104,981.59

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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.