Finding the Fourth Proportional to 118,933.48, 164,135.79 and 78,576.44
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Solution
The fourth proportional to 118,933.48, 164,135.79 and 78,576.44 is: 108,440.50
Step by Step Solution
- Step 1: Write the proportion equation
118,933.48 : 164,135.79 = 78,576.44 : x - Step 2: Convert to fraction form
118,933.48/164,135.79 = 78,576.44/x - Step 3: Cross multiply
118,933.48x = 164,135.79 × 78,576.44 - Step 4: Simplify right side
118,933.48x = 12,897,205,661.91 - Step 5: Solve for x
x = 12,897,205,661.91/118,933.48 - Step 6: Final answer
x = 108,440.50
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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.