Home / 149,054.24-205,690.56-81,986.24

Finding the Fourth Proportional to 149,054.24, 205,690.56 and 81,986.24

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Solution

The fourth proportional to 149,054.24, 205,690.56 and 81,986.24 is: 113,138.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,054.24 : 205,690.56 = 81,986.24 : x
  2. Step 2: Convert to fraction form
    149,054.24/205,690.56 = 81,986.24/x
  3. Step 3: Cross multiply
    149,054.24x = 205,690.56 × 81,986.24
  4. Step 4: Simplify right side
    149,054.24x = 16,863,795,617.89
  5. Step 5: Solve for x
    x = 16,863,795,617.89/149,054.24
  6. Step 6: Final answer
    x = 113,138.65

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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.