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Finding the Fourth Proportional to 163,809.90, 245,714.70 and 45,481.20

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Solution

The fourth proportional to 163,809.90, 245,714.70 and 45,481.20 is: 68,221.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,809.90 : 245,714.70 = 45,481.20 : x
  2. Step 2: Convert to fraction form
    163,809.90/245,714.70 = 45,481.20/x
  3. Step 3: Cross multiply
    163,809.90x = 245,714.70 × 45,481.20
  4. Step 4: Simplify right side
    163,809.90x = 11,175,399,413.64
  5. Step 5: Solve for x
    x = 11,175,399,413.64/163,809.90
  6. Step 6: Final answer
    x = 68,221.76

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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.