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Finding the Fourth Proportional to 139,604.56, 192,725.64 and 107,701.84

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Solution

The fourth proportional to 139,604.56, 192,725.64 and 107,701.84 is: 148,683.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,604.56 : 192,725.64 = 107,701.84 : x
  2. Step 2: Convert to fraction form
    139,604.56/192,725.64 = 107,701.84/x
  3. Step 3: Cross multiply
    139,604.56x = 192,725.64 × 107,701.84
  4. Step 4: Simplify right side
    139,604.56x = 20,756,906,043.18
  5. Step 5: Solve for x
    x = 20,756,906,043.18/139,604.56
  6. Step 6: Final answer
    x = 148,683.58

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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.