Finding the Fourth Proportional to 154,986,645.66, 213,881,582.57 and 85,372,026.54
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Solution
The fourth proportional to 154,986,645.66, 213,881,582.57 and 85,372,026.54 is: 117,813,402.99
Step by Step Solution
- Step 1: Write the proportion equation
154,986,645.66 : 213,881,582.57 = 85,372,026.54 : x - Step 2: Convert to fraction form
154,986,645.66/213,881,582.57 = 85,372,026.54/x - Step 3: Cross multiply
154,986,645.66x = 213,881,582.57 × 85,372,026.54 - Step 4: Simplify right side
154,986,645.66x = 18,259,504,143,156,384 - Step 5: Solve for x
x = 18,259,504,143,156,384/154,986,645.66 - Step 6: Final answer
x = 117,813,402.99
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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.