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Finding the Fourth Proportional to 163,714.80, 245,629.80 and 80,553.20

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Solution

The fourth proportional to 163,714.80, 245,629.80 and 80,553.20 is: 120,858.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,714.80 : 245,629.80 = 80,553.20 : x
  2. Step 2: Convert to fraction form
    163,714.80/245,629.80 = 80,553.20/x
  3. Step 3: Cross multiply
    163,714.80x = 245,629.80 × 80,553.20
  4. Step 4: Simplify right side
    163,714.80x = 19,786,266,405.36
  5. Step 5: Solve for x
    x = 19,786,266,405.36/163,714.80
  6. Step 6: Final answer
    x = 120,858.14

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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.