Finding the Fourth Proportional to 126,278,419.52, 172,998,539.80 and 121,557,213.65
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Solution
The fourth proportional to 126,278,419.52, 172,998,539.80 and 121,557,213.65 is: 166,530,595.99
Step by Step Solution
- Step 1: Write the proportion equation
126,278,419.52 : 172,998,539.80 = 121,557,213.65 : x - Step 2: Convert to fraction form
126,278,419.52/172,998,539.80 = 121,557,213.65/x - Step 3: Cross multiply
126,278,419.52x = 172,998,539.80 × 121,557,213.65 - Step 4: Simplify right side
126,278,419.52x = 21,029,220,463,606,632 - Step 5: Solve for x
x = 21,029,220,463,606,632/126,278,419.52 - Step 6: Final answer
x = 166,530,595.99
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.