Finding the Fourth Proportional to 140,456.86, 193,782.99 and 79,984.63
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Solution
The fourth proportional to 140,456.86, 193,782.99 and 79,984.63 is: 110,351.75
Step by Step Solution
- Step 1: Write the proportion equation
140,456.86 : 193,782.99 = 79,984.63 : x - Step 2: Convert to fraction form
140,456.86/193,782.99 = 79,984.63/x - Step 3: Cross multiply
140,456.86x = 193,782.99 × 79,984.63 - Step 4: Simplify right side
140,456.86x = 15,499,660,755.44 - Step 5: Solve for x
x = 15,499,660,755.44/140,456.86 - Step 6: Final answer
x = 110,351.75
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.