Finding the Fourth Proportional to 118,276.20, 177,122.70 and 78,618.60
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Solution
The fourth proportional to 118,276.20, 177,122.70 and 78,618.60 is: 117,734.07
Step by Step Solution
- Step 1: Write the proportion equation
118,276.20 : 177,122.70 = 78,618.60 : x - Step 2: Convert to fraction form
118,276.20/177,122.70 = 78,618.60/x - Step 3: Cross multiply
118,276.20x = 177,122.70 × 78,618.60 - Step 4: Simplify right side
118,276.20x = 13,925,138,702.22 - Step 5: Solve for x
x = 13,925,138,702.22/118,276.20 - Step 6: Final answer
x = 117,734.07
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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.