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Finding the Fourth Proportional to 139,574.12, 209,361.78 and 44,818.70

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Solution

The fourth proportional to 139,574.12, 209,361.78 and 44,818.70 is: 67,228.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,574.12 : 209,361.78 = 44,818.70 : x
  2. Step 2: Convert to fraction form
    139,574.12/209,361.78 = 44,818.70/x
  3. Step 3: Cross multiply
    139,574.12x = 209,361.78 × 44,818.70
  4. Step 4: Simplify right side
    139,574.12x = 9,383,322,809.29
  5. Step 5: Solve for x
    x = 9,383,322,809.29/139,574.12
  6. Step 6: Final answer
    x = 67,228.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.