Home / 139,619.36-192,668.64-77,525.98

Finding the Fourth Proportional to 139,619.36, 192,668.64 and 77,525.98

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Solution

The fourth proportional to 139,619.36, 192,668.64 and 77,525.98 is: 106,982.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,619.36 : 192,668.64 = 77,525.98 : x
  2. Step 2: Convert to fraction form
    139,619.36/192,668.64 = 77,525.98/x
  3. Step 3: Cross multiply
    139,619.36x = 192,668.64 × 77,525.98
  4. Step 4: Simplify right side
    139,619.36x = 14,936,825,131.27
  5. Step 5: Solve for x
    x = 14,936,825,131.27/139,619.36
  6. Step 6: Final answer
    x = 106,982.48

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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.