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Finding the Fourth Proportional to 139,371.98, 192,392.21 and 94,111.26

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Solution

The fourth proportional to 139,371.98, 192,392.21 and 94,111.26 is: 129,913.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,371.98 : 192,392.21 = 94,111.26 : x
  2. Step 2: Convert to fraction form
    139,371.98/192,392.21 = 94,111.26/x
  3. Step 3: Cross multiply
    139,371.98x = 192,392.21 × 94,111.26
  4. Step 4: Simplify right side
    139,371.98x = 18,106,273,297.28
  5. Step 5: Solve for x
    x = 18,106,273,297.28/139,371.98
  6. Step 6: Final answer
    x = 129,913.30

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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.