Finding the Fourth Proportional to 154,284,991.84, 212,899,216.08 and 91,550,279.20
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Solution
The fourth proportional to 154,284,991.84, 212,899,216.08 and 91,550,279.20 is: 126,331,034.80
Step by Step Solution
- Step 1: Write the proportion equation
154,284,991.84 : 212,899,216.08 = 91,550,279.20 : x - Step 2: Convert to fraction form
154,284,991.84/212,899,216.08 = 91,550,279.20/x - Step 3: Cross multiply
154,284,991.84x = 212,899,216.08 × 91,550,279.20 - Step 4: Simplify right side
154,284,991.84x = 19,490,982,673,585,132 - Step 5: Solve for x
x = 19,490,982,673,585,132/154,284,991.84 - Step 6: Final answer
x = 126,331,034.80
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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.