Home / 139,352.19-192,308.55-78,935.37

Finding the Fourth Proportional to 139,352.19, 192,308.55 and 78,935.37

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Solution

The fourth proportional to 139,352.19, 192,308.55 and 78,935.37 is: 108,932.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,352.19 : 192,308.55 = 78,935.37 : x
  2. Step 2: Convert to fraction form
    139,352.19/192,308.55 = 78,935.37/x
  3. Step 3: Cross multiply
    139,352.19x = 192,308.55 × 78,935.37
  4. Step 4: Simplify right side
    139,352.19x = 15,179,947,029.18
  5. Step 5: Solve for x
    x = 15,179,947,029.18/139,352.19
  6. Step 6: Final answer
    x = 108,932.25

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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.