Finding the Fourth Proportional to 135,158,999.38, 186,523,091.82 and 76,430,450.74
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Solution
The fourth proportional to 135,158,999.38, 186,523,091.82 and 76,430,450.74 is: 105,476,098.87
Step by Step Solution
- Step 1: Write the proportion equation
135,158,999.38 : 186,523,091.82 = 76,430,450.74 : x - Step 2: Convert to fraction form
135,158,999.38/186,523,091.82 = 76,430,450.74/x - Step 3: Cross multiply
135,158,999.38x = 186,523,091.82 × 76,430,450.74 - Step 4: Simplify right side
135,158,999.38x = 14,256,043,981,221,006 - Step 5: Solve for x
x = 14,256,043,981,221,006/135,158,999.38 - Step 6: Final answer
x = 105,476,098.87
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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.