Finding the Fourth Proportional to 115,652,106.66, 159,598,418.14 and 66,091,912.76
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Solution
The fourth proportional to 115,652,106.66, 159,598,418.14 and 66,091,912.76 is: 91,205,988.66
Step by Step Solution
- Step 1: Write the proportion equation
115,652,106.66 : 159,598,418.14 = 66,091,912.76 : x - Step 2: Convert to fraction form
115,652,106.66/159,598,418.14 = 66,091,912.76/x - Step 3: Cross multiply
115,652,106.66x = 159,598,418.14 × 66,091,912.76 - Step 4: Simplify right side
115,652,106.66x = 10,548,164,728,342,880 - Step 5: Solve for x
x = 10,548,164,728,342,880/115,652,106.66 - Step 6: Final answer
x = 91,205,988.66
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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.