Home / 120,986.94-181,479.80-31,029.27

Finding the Fourth Proportional to 120,986.94, 181,479.80 and 31,029.27

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Solution

The fourth proportional to 120,986.94, 181,479.80 and 31,029.27 is: 46,543.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,986.94 : 181,479.80 = 31,029.27 : x
  2. Step 2: Convert to fraction form
    120,986.94/181,479.80 = 31,029.27/x
  3. Step 3: Cross multiply
    120,986.94x = 181,479.80 × 31,029.27
  4. Step 4: Simplify right side
    120,986.94x = 5,631,185,558.60
  5. Step 5: Solve for x
    x = 5,631,185,558.60/120,986.94
  6. Step 6: Final answer
    x = 46,543.75

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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.