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Finding the Fourth Proportional to 171,901.20, 257,924.70 and 108,769.80

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Solution

The fourth proportional to 171,901.20, 257,924.70 and 108,769.80 is: 163,200.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,901.20 : 257,924.70 = 108,769.80 : x
  2. Step 2: Convert to fraction form
    171,901.20/257,924.70 = 108,769.80/x
  3. Step 3: Cross multiply
    171,901.20x = 257,924.70 × 108,769.80
  4. Step 4: Simplify right side
    171,901.20x = 28,054,418,034.06
  5. Step 5: Solve for x
    x = 28,054,418,034.06/171,901.20
  6. Step 6: Final answer
    x = 163,200.83

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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.