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Finding the Fourth Proportional to 139,435.37, 192,437.21 and 82,846.74

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Solution

The fourth proportional to 139,435.37, 192,437.21 and 82,846.74 is: 114,338.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,435.37 : 192,437.21 = 82,846.74 : x
  2. Step 2: Convert to fraction form
    139,435.37/192,437.21 = 82,846.74/x
  3. Step 3: Cross multiply
    139,435.37x = 192,437.21 × 82,846.74
  4. Step 4: Simplify right side
    139,435.37x = 15,942,795,088.96
  5. Step 5: Solve for x
    x = 15,942,795,088.96/139,435.37
  6. Step 6: Final answer
    x = 114,338.25

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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.