Finding the Fourth Proportional to 230,991.68, 318,761.95 and 129,014.15
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Solution
The fourth proportional to 230,991.68, 318,761.95 and 129,014.15 is: 178,035.85
Step by Step Solution
- Step 1: Write the proportion equation
230,991.68 : 318,761.95 = 129,014.15 : x - Step 2: Convert to fraction form
230,991.68/318,761.95 = 129,014.15/x - Step 3: Cross multiply
230,991.68x = 318,761.95 × 129,014.15 - Step 4: Simplify right side
230,991.68x = 41,124,801,310.60 - Step 5: Solve for x
x = 41,124,801,310.60/230,991.68 - Step 6: Final answer
x = 178,035.85
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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.