Finding the Fourth Proportional to 118,219.26, 163,166.86 and 72,286.75
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Solution
The fourth proportional to 118,219.26, 163,166.86 and 72,286.75 is: 99,770.56
Step by Step Solution
- Step 1: Write the proportion equation
118,219.26 : 163,166.86 = 72,286.75 : x - Step 2: Convert to fraction form
118,219.26/163,166.86 = 72,286.75/x - Step 3: Cross multiply
118,219.26x = 163,166.86 × 72,286.75 - Step 4: Simplify right side
118,219.26x = 11,794,802,017.11 - Step 5: Solve for x
x = 11,794,802,017.11/118,219.26 - Step 6: Final answer
x = 99,770.56
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1.5x scale
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.