Finding the Fourth Proportional to 131,682,306.12, 181,719,151.07 and 72,943,682.42
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Solution
The fourth proportional to 131,682,306.12, 181,719,151.07 and 72,943,682.42 is: 100,660,934.90
Step by Step Solution
- Step 1: Write the proportion equation
131,682,306.12 : 181,719,151.07 = 72,943,682.42 : x - Step 2: Convert to fraction form
131,682,306.12/181,719,151.07 = 72,943,682.42/x - Step 3: Cross multiply
131,682,306.12x = 181,719,151.07 × 72,943,682.42 - Step 4: Simplify right side
131,682,306.12x = 13,255,264,044,008,770 - Step 5: Solve for x
x = 13,255,264,044,008,770/131,682,306.12 - Step 6: Final answer
x = 100,660,934.90
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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.