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Finding the Fourth Proportional to 139,760.64, 192,989.58 and 135,241.56

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Solution

The fourth proportional to 139,760.64, 192,989.58 and 135,241.56 is: 186,749.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,760.64 : 192,989.58 = 135,241.56 : x
  2. Step 2: Convert to fraction form
    139,760.64/192,989.58 = 135,241.56/x
  3. Step 3: Cross multiply
    139,760.64x = 192,989.58 × 135,241.56
  4. Step 4: Simplify right side
    139,760.64x = 26,100,211,862.94
  5. Step 5: Solve for x
    x = 26,100,211,862.94/139,760.64
  6. Step 6: Final answer
    x = 186,749.37

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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.