Finding the Fourth Proportional to 121,609,663.49, 167,821,497.45 and 65,855,180.02
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Solution
The fourth proportional to 121,609,663.49, 167,821,497.45 and 65,855,180.02 is: 90,880,236.07
Step by Step Solution
- Step 1: Write the proportion equation
121,609,663.49 : 167,821,497.45 = 65,855,180.02 : x - Step 2: Convert to fraction form
121,609,663.49/167,821,497.45 = 65,855,180.02/x - Step 3: Cross multiply
121,609,663.49x = 167,821,497.45 × 65,855,180.02 - Step 4: Simplify right side
121,609,663.49x = 11,051,914,925,795,720 - Step 5: Solve for x
x = 11,051,914,925,795,720/121,609,663.49 - Step 6: Final answer
x = 90,880,236.07
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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.