Finding the Fourth Proportional to 118,338,640.58, 163,310,938.08 and 66,129,876.74
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Solution
The fourth proportional to 118,338,640.58, 163,310,938.08 and 66,129,876.74 is: 91,261,249.52
Step by Step Solution
- Step 1: Write the proportion equation
118,338,640.58 : 163,310,938.08 = 66,129,876.74 : x - Step 2: Convert to fraction form
118,338,640.58/163,310,938.08 = 66,129,876.74/x - Step 3: Cross multiply
118,338,640.58x = 163,310,938.08 × 66,129,876.74 - Step 4: Simplify right side
118,338,640.58x = 10,799,732,205,524,174 - Step 5: Solve for x
x = 10,799,732,205,524,174/118,338,640.58 - Step 6: Final answer
x = 91,261,249.52
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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.