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Finding the Fourth Proportional to 139,361.85, 192,378.24 and 94,101.12

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Solution

The fourth proportional to 139,361.85, 192,378.24 and 94,101.12 is: 129,899.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,361.85 : 192,378.24 = 94,101.12 : x
  2. Step 2: Convert to fraction form
    139,361.85/192,378.24 = 94,101.12/x
  3. Step 3: Cross multiply
    139,361.85x = 192,378.24 × 94,101.12
  4. Step 4: Simplify right side
    139,361.85x = 18,103,007,847.63
  5. Step 5: Solve for x
    x = 18,103,007,847.63/139,361.85
  6. Step 6: Final answer
    x = 129,899.31

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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.