Finding the Fourth Proportional to 129,117,519,780.97, 178,246,686,034.36 and 80,304,074,197.53
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Solution
The fourth proportional to 129,117,519,780.97, 178,246,686,034.36 and 80,304,074,197.53 is: 110,859,743,317.94
Step by Step Solution
- Step 1: Write the proportion equation
129,117,519,780.97 : 178,246,686,034.36 = 80,304,074,197.53 : x - Step 2: Convert to fraction form
129,117,519,780.97/178,246,686,034.36 = 80,304,074,197.53/x - Step 3: Cross multiply
129,117,519,780.97x = 178,246,686,034.36 × 80,304,074,197.53 - Step 4: Simplify right side
129,117,519,780.97x = 14,313,935,100,767,077,662,720 - Step 5: Solve for x
x = 14,313,935,100,767,077,662,720/129,117,519,780.97 - Step 6: Final answer
x = 110,859,743,317.94
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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.