Home / 82,087.26-122,537.31-72,122.73

Finding the Fourth Proportional to 82,087.26, 122,537.31 and 72,122.73

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Solution

The fourth proportional to 82,087.26, 122,537.31 and 72,122.73 is: 107,662.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,087.26 : 122,537.31 = 72,122.73 : x
  2. Step 2: Convert to fraction form
    82,087.26/122,537.31 = 72,122.73/x
  3. Step 3: Cross multiply
    82,087.26x = 122,537.31 × 72,122.73
  4. Step 4: Simplify right side
    82,087.26x = 8,837,725,324.06
  5. Step 5: Solve for x
    x = 8,837,725,324.06/82,087.26
  6. Step 6: Final answer
    x = 107,662.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.