Finding the Fourth Proportional to 212,656,006.80, 318,984,010.20 and 115,910,125.20
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Solution
The fourth proportional to 212,656,006.80, 318,984,010.20 and 115,910,125.20 is: 173,865,187.80
Step by Step Solution
- Step 1: Write the proportion equation
212,656,006.80 : 318,984,010.20 = 115,910,125.20 : x - Step 2: Convert to fraction form
212,656,006.80/318,984,010.20 = 115,910,125.20/x - Step 3: Cross multiply
212,656,006.80x = 318,984,010.20 × 115,910,125.20 - Step 4: Simplify right side
212,656,006.80x = 36,973,476,559,080,080 - Step 5: Solve for x
x = 36,973,476,559,080,080/212,656,006.80 - Step 6: Final answer
x = 173,865,187.80
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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.