Finding the Fourth Proportional to 149,563,417.82, 206,431,953.97 and 87,703,685.42
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Solution
The fourth proportional to 149,563,417.82, 206,431,953.97 and 87,703,685.42 is: 121,051,279.89
Step by Step Solution
- Step 1: Write the proportion equation
149,563,417.82 : 206,431,953.97 = 87,703,685.42 : x - Step 2: Convert to fraction form
149,563,417.82/206,431,953.97 = 87,703,685.42/x - Step 3: Cross multiply
149,563,417.82x = 206,431,953.97 × 87,703,685.42 - Step 4: Simplify right side
149,563,417.82x = 18,104,843,151,620,800 - Step 5: Solve for x
x = 18,104,843,151,620,800/149,563,417.82 - Step 6: Final answer
x = 121,051,279.89
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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.