Finding the Fourth Proportional to 121,053,902.09, 167,040,589.56 and 68,120,385.59
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Solution
The fourth proportional to 121,053,902.09, 167,040,589.56 and 68,120,385.59 is: 93,998,369.10
Step by Step Solution
- Step 1: Write the proportion equation
121,053,902.09 : 167,040,589.56 = 68,120,385.59 : x - Step 2: Convert to fraction form
121,053,902.09/167,040,589.56 = 68,120,385.59/x - Step 3: Cross multiply
121,053,902.09x = 167,040,589.56 × 68,120,385.59 - Step 4: Simplify right side
121,053,902.09x = 11,378,869,370,008,130 - Step 5: Solve for x
x = 11,378,869,370,008,130/121,053,902.09 - Step 6: Final answer
x = 93,998,369.10
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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.