Finding the Fourth Proportional to 139,968,343.20, 209,952,514.80 and 88,887,021.60
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Solution
The fourth proportional to 139,968,343.20, 209,952,514.80 and 88,887,021.60 is: 133,330,532.40
Step by Step Solution
- Step 1: Write the proportion equation
139,968,343.20 : 209,952,514.80 = 88,887,021.60 : x - Step 2: Convert to fraction form
139,968,343.20/209,952,514.80 = 88,887,021.60/x - Step 3: Cross multiply
139,968,343.20x = 209,952,514.80 × 88,887,021.60 - Step 4: Simplify right side
139,968,343.20x = 18,662,053,718,001,920 - Step 5: Solve for x
x = 18,662,053,718,001,920/139,968,343.20 - Step 6: Final answer
x = 133,330,532.40
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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.