Finding the Fourth Proportional to 126,042.09, 173,930.27 and 72,331.53
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Solution
The fourth proportional to 126,042.09, 173,930.27 and 72,331.53 is: 99,813.02
Step by Step Solution
- Step 1: Write the proportion equation
126,042.09 : 173,930.27 = 72,331.53 : x - Step 2: Convert to fraction form
126,042.09/173,930.27 = 72,331.53/x - Step 3: Cross multiply
126,042.09x = 173,930.27 × 72,331.53 - Step 4: Simplify right side
126,042.09x = 12,580,642,180.76 - Step 5: Solve for x
x = 12,580,642,180.76/126,042.09 - Step 6: Final answer
x = 99,813.02
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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.