Finding the Fourth Proportional to 128,933,403.36, 193,278,517.56 and 64,175,983.44
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Solution
The fourth proportional to 128,933,403.36, 193,278,517.56 and 64,175,983.44 is: 96,203,455.57
Step by Step Solution
- Step 1: Write the proportion equation
128,933,403.36 : 193,278,517.56 = 64,175,983.44 : x - Step 2: Convert to fraction form
128,933,403.36/193,278,517.56 = 64,175,983.44/x - Step 3: Cross multiply
128,933,403.36x = 193,278,517.56 × 64,175,983.44 - Step 4: Simplify right side
128,933,403.36x = 12,403,838,942,238,308 - Step 5: Solve for x
x = 12,403,838,942,238,308/128,933,403.36 - Step 6: Final answer
x = 96,203,455.57
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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.