Home / 171,636.86-257,120.11-81,551.36

Finding the Fourth Proportional to 171,636.86, 257,120.11 and 81,551.36

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Solution

The fourth proportional to 171,636.86, 257,120.11 and 81,551.36 is: 122,167.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,636.86 : 257,120.11 = 81,551.36 : x
  2. Step 2: Convert to fraction form
    171,636.86/257,120.11 = 81,551.36/x
  3. Step 3: Cross multiply
    171,636.86x = 257,120.11 × 81,551.36
  4. Step 4: Simplify right side
    171,636.86x = 20,968,494,246.09
  5. Step 5: Solve for x
    x = 20,968,494,246.09/171,636.86
  6. Step 6: Final answer
    x = 122,167.78

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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.