Finding the Fourth Proportional to 126,910.75, 175,114.63 and 72,438.05
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Solution
The fourth proportional to 126,910.75, 175,114.63 and 72,438.05 is: 99,951.83
Step by Step Solution
- Step 1: Write the proportion equation
126,910.75 : 175,114.63 = 72,438.05 : x - Step 2: Convert to fraction form
126,910.75/175,114.63 = 72,438.05/x - Step 3: Cross multiply
126,910.75x = 175,114.63 × 72,438.05 - Step 4: Simplify right side
126,910.75x = 12,684,961,448.10 - Step 5: Solve for x
x = 12,684,961,448.10/126,910.75 - Step 6: Final answer
x = 99,951.83
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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.