Finding the Fourth Proportional to 136,972,540.64, 189,022,059.60 and 75,091,551.68
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Solution
The fourth proportional to 136,972,540.64, 189,022,059.60 and 75,091,551.68 is: 103,626,315.84
Step by Step Solution
- Step 1: Write the proportion equation
136,972,540.64 : 189,022,059.60 = 75,091,551.68 : x - Step 2: Convert to fraction form
136,972,540.64/189,022,059.60 = 75,091,551.68/x - Step 3: Cross multiply
136,972,540.64x = 189,022,059.60 × 75,091,551.68 - Step 4: Simplify right side
136,972,540.64x = 14,193,959,757,113,442 - Step 5: Solve for x
x = 14,193,959,757,113,442/136,972,540.64 - Step 6: Final answer
x = 103,626,315.84
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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.