Home / 68,789.36-103,184.20-18,870.18

Finding the Fourth Proportional to 68,789.36, 103,184.20 and 18,870.18

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Solution

The fourth proportional to 68,789.36, 103,184.20 and 18,870.18 is: 28,305.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,789.36 : 103,184.20 = 18,870.18 : x
  2. Step 2: Convert to fraction form
    68,789.36/103,184.20 = 18,870.18/x
  3. Step 3: Cross multiply
    68,789.36x = 103,184.20 × 18,870.18
  4. Step 4: Simplify right side
    68,789.36x = 1,947,103,993.04
  5. Step 5: Solve for x
    x = 1,947,103,993.04/68,789.36
  6. Step 6: Final answer
    x = 28,305.31

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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.