Home / 139,738.07-192,838.39-76,075.87

Finding the Fourth Proportional to 139,738.07, 192,838.39 and 76,075.87

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Solution

The fourth proportional to 139,738.07, 192,838.39 and 76,075.87 is: 104,984.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,738.07 : 192,838.39 = 76,075.87 : x
  2. Step 2: Convert to fraction form
    139,738.07/192,838.39 = 76,075.87/x
  3. Step 3: Cross multiply
    139,738.07x = 192,838.39 × 76,075.87
  4. Step 4: Simplify right side
    139,738.07x = 14,670,348,288.65
  5. Step 5: Solve for x
    x = 14,670,348,288.65/139,738.07
  6. Step 6: Final answer
    x = 104,984.62

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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.