Finding the Fourth Proportional to 99,207,143.85, 136,906,390.43 and 54,555,994.62
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Solution
The fourth proportional to 99,207,143.85, 136,906,390.43 and 54,555,994.62 is: 75,287,565.09
Step by Step Solution
- Step 1: Write the proportion equation
99,207,143.85 : 136,906,390.43 = 54,555,994.62 : x - Step 2: Convert to fraction form
99,207,143.85/136,906,390.43 = 54,555,994.62/x - Step 3: Cross multiply
99,207,143.85x = 136,906,390.43 × 54,555,994.62 - Step 4: Simplify right side
99,207,143.85x = 7,469,064,300,251,932 - Step 5: Solve for x
x = 7,469,064,300,251,932/99,207,143.85 - Step 6: Final answer
x = 75,287,565.09
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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.