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Finding the Fourth Proportional to 171,940.20, 257,983.20 and 108,808.80

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Solution

The fourth proportional to 171,940.20, 257,983.20 and 108,808.80 is: 163,259.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,940.20 : 257,983.20 = 108,808.80 : x
  2. Step 2: Convert to fraction form
    171,940.20/257,983.20 = 108,808.80/x
  3. Step 3: Cross multiply
    171,940.20x = 257,983.20 × 108,808.80
  4. Step 4: Simplify right side
    171,940.20x = 28,070,842,412.16
  5. Step 5: Solve for x
    x = 28,070,842,412.16/171,940.20
  6. Step 6: Final answer
    x = 163,259.33

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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.