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Finding the Fourth Proportional to 139,555.92, 192,630.36 and 103,794.38

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Solution

The fourth proportional to 139,555.92, 192,630.36 and 103,794.38 is: 143,268.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,555.92 : 192,630.36 = 103,794.38 : x
  2. Step 2: Convert to fraction form
    139,555.92/192,630.36 = 103,794.38/x
  3. Step 3: Cross multiply
    139,555.92x = 192,630.36 × 103,794.38
  4. Step 4: Simplify right side
    139,555.92x = 19,993,948,785.38
  5. Step 5: Solve for x
    x = 19,993,948,785.38/139,555.92
  6. Step 6: Final answer
    x = 143,268.37

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1.5x scale

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.