Finding the Fourth Proportional to 118,778.49, 178,193.66 and 39,890.63
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Solution
The fourth proportional to 118,778.49, 178,193.66 and 39,890.63 is: 59,844.65
Step by Step Solution
- Step 1: Write the proportion equation
118,778.49 : 178,193.66 = 39,890.63 : x - Step 2: Convert to fraction form
118,778.49/178,193.66 = 39,890.63/x - Step 3: Cross multiply
118,778.49x = 178,193.66 × 39,890.63 - Step 4: Simplify right side
118,778.49x = 7,108,257,605.44 - Step 5: Solve for x
x = 7,108,257,605.44/118,778.49 - Step 6: Final answer
x = 59,844.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.