Home / 171,518.41-257,140.23-81,515.94

Finding the Fourth Proportional to 171,518.41, 257,140.23 and 81,515.94

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Solution

The fourth proportional to 171,518.41, 257,140.23 and 81,515.94 is: 122,208.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,518.41 : 257,140.23 = 81,515.94 : x
  2. Step 2: Convert to fraction form
    171,518.41/257,140.23 = 81,515.94/x
  3. Step 3: Cross multiply
    171,518.41x = 257,140.23 × 81,515.94
  4. Step 4: Simplify right side
    171,518.41x = 20,961,027,560.27
  5. Step 5: Solve for x
    x = 20,961,027,560.27/171,518.41
  6. Step 6: Final answer
    x = 122,208.62

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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.