Finding the Fourth Proportional to 99,640,841.44, 137,382,198.62 and 81,937,878.34
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Solution
The fourth proportional to 99,640,841.44, 137,382,198.62 and 81,937,878.34 is: 112,973,813.89
Step by Step Solution
- Step 1: Write the proportion equation
99,640,841.44 : 137,382,198.62 = 81,937,878.34 : x - Step 2: Convert to fraction form
99,640,841.44/137,382,198.62 = 81,937,878.34/x - Step 3: Cross multiply
99,640,841.44x = 137,382,198.62 × 81,937,878.34 - Step 4: Simplify right side
99,640,841.44x = 11,256,805,876,607,276 - Step 5: Solve for x
x = 11,256,805,876,607,276/99,640,841.44 - Step 6: Final answer
x = 112,973,813.89
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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.