Finding the Fourth Proportional to 128,879.34, 193,321.20 and 44,642.00
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Solution
The fourth proportional to 128,879.34, 193,321.20 and 44,642.00 is: 66,963.75
Step by Step Solution
- Step 1: Write the proportion equation
128,879.34 : 193,321.20 = 44,642.00 : x - Step 2: Convert to fraction form
128,879.34/193,321.20 = 44,642.00/x - Step 3: Cross multiply
128,879.34x = 193,321.20 × 44,642.00 - Step 4: Simplify right side
128,879.34x = 8,630,244,043.79 - Step 5: Solve for x
x = 8,630,244,043.79/128,879.34 - Step 6: Final answer
x = 66,963.75
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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.