Finding the Fourth Proportional to 118,102,915.20, 162,991,266.96 and 65,190,129.48
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Solution
The fourth proportional to 118,102,915.20, 162,991,266.96 and 65,190,129.48 is: 89,967,481.15
Step by Step Solution
- Step 1: Write the proportion equation
118,102,915.20 : 162,991,266.96 = 65,190,129.48 : x - Step 2: Convert to fraction form
118,102,915.20/162,991,266.96 = 65,190,129.48/x - Step 3: Cross multiply
118,102,915.20x = 162,991,266.96 × 65,190,129.48 - Step 4: Simplify right side
118,102,915.20x = 10,625,421,797,231,646 - Step 5: Solve for x
x = 10,625,421,797,231,646/118,102,915.20 - Step 6: Final answer
x = 89,967,481.15
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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.