Home / 168,811.20-252,876.60-105,436.80

Finding the Fourth Proportional to 168,811.20, 252,876.60 and 105,436.80

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Solution

The fourth proportional to 168,811.20, 252,876.60 and 105,436.80 is: 157,942.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,811.20 : 252,876.60 = 105,436.80 : x
  2. Step 2: Convert to fraction form
    168,811.20/252,876.60 = 105,436.80/x
  3. Step 3: Cross multiply
    168,811.20x = 252,876.60 × 105,436.80
  4. Step 4: Simplify right side
    168,811.20x = 26,662,499,498.88
  5. Step 5: Solve for x
    x = 26,662,499,498.88/168,811.20
  6. Step 6: Final answer
    x = 157,942.72

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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.