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Finding the Fourth Proportional to 139,268.82, 192,193.29 and 75,606.63

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Solution

The fourth proportional to 139,268.82, 192,193.29 and 75,606.63 is: 104,338.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,268.82 : 192,193.29 = 75,606.63 : x
  2. Step 2: Convert to fraction form
    139,268.82/192,193.29 = 75,606.63/x
  3. Step 3: Cross multiply
    139,268.82x = 192,193.29 × 75,606.63
  4. Step 4: Simplify right side
    139,268.82x = 14,531,086,965.51
  5. Step 5: Solve for x
    x = 14,531,086,965.51/139,268.82
  6. Step 6: Final answer
    x = 104,338.41

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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.