Finding the Fourth Proportional to 126,043.84, 173,970.08 and 78,333.12
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Solution
The fourth proportional to 126,043.84, 173,970.08 and 78,333.12 is: 108,118.09
Step by Step Solution
- Step 1: Write the proportion equation
126,043.84 : 173,970.08 = 78,333.12 : x - Step 2: Convert to fraction form
126,043.84/173,970.08 = 78,333.12/x - Step 3: Cross multiply
126,043.84x = 173,970.08 × 78,333.12 - Step 4: Simplify right side
126,043.84x = 13,627,619,153.05 - Step 5: Solve for x
x = 13,627,619,153.05/126,043.84 - Step 6: Final answer
x = 108,118.09
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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.