Finding the Fourth Proportional to 112,119,568.20, 167,860,487.70 and 86,397,823.80
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Solution
The fourth proportional to 112,119,568.20, 167,860,487.70 and 86,397,823.80 is: 129,351,022.95
Step by Step Solution
- Step 1: Write the proportion equation
112,119,568.20 : 167,860,487.70 = 86,397,823.80 : x - Step 2: Convert to fraction form
112,119,568.20/167,860,487.70 = 86,397,823.80/x - Step 3: Cross multiply
112,119,568.20x = 167,860,487.70 × 86,397,823.80 - Step 4: Simplify right side
112,119,568.20x = 14,502,780,839,286,666 - Step 5: Solve for x
x = 14,502,780,839,286,666/112,119,568.20 - Step 6: Final answer
x = 129,351,022.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.