Home / 171,943.20-257,987.70-108,811.80

Finding the Fourth Proportional to 171,943.20, 257,987.70 and 108,811.80

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Solution

The fourth proportional to 171,943.20, 257,987.70 and 108,811.80 is: 163,263.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,943.20 : 257,987.70 = 108,811.80 : x
  2. Step 2: Convert to fraction form
    171,943.20/257,987.70 = 108,811.80/x
  3. Step 3: Cross multiply
    171,943.20x = 257,987.70 × 108,811.80
  4. Step 4: Simplify right side
    171,943.20x = 28,072,106,014.86
  5. Step 5: Solve for x
    x = 28,072,106,014.86/171,943.20
  6. Step 6: Final answer
    x = 163,263.83

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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.