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Finding the Fourth Proportional to 100,696.77, 138,950.78 and 58,247.37

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Solution

The fourth proportional to 100,696.77, 138,950.78 and 58,247.37 is: 80,375.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,696.77 : 138,950.78 = 58,247.37 : x
  2. Step 2: Convert to fraction form
    100,696.77/138,950.78 = 58,247.37/x
  3. Step 3: Cross multiply
    100,696.77x = 138,950.78 × 58,247.37
  4. Step 4: Simplify right side
    100,696.77x = 8,093,517,203.21
  5. Step 5: Solve for x
    x = 8,093,517,203.21/100,696.77
  6. Step 6: Final answer
    x = 80,375.14

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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.