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Finding the Fourth Proportional to 163,540.35, 245,405.70 and 68,763.60

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Solution

The fourth proportional to 163,540.35, 245,405.70 and 68,763.60 is: 103,185.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,540.35 : 245,405.70 = 68,763.60 : x
  2. Step 2: Convert to fraction form
    163,540.35/245,405.70 = 68,763.60/x
  3. Step 3: Cross multiply
    163,540.35x = 245,405.70 × 68,763.60
  4. Step 4: Simplify right side
    163,540.35x = 16,874,979,392.52
  5. Step 5: Solve for x
    x = 16,874,979,392.52/163,540.35
  6. Step 6: Final answer
    x = 103,185.42

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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.