Finding the Fourth Proportional to 129,504,590.28, 178,726,524.36 and 73,752,370.20
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Solution
The fourth proportional to 129,504,590.28, 178,726,524.36 and 73,752,370.20 is: 101,784,073.91
Step by Step Solution
- Step 1: Write the proportion equation
129,504,590.28 : 178,726,524.36 = 73,752,370.20 : x - Step 2: Convert to fraction form
129,504,590.28/178,726,524.36 = 73,752,370.20/x - Step 3: Cross multiply
129,504,590.28x = 178,726,524.36 × 73,752,370.20 - Step 4: Simplify right side
129,504,590.28x = 13,181,504,789,158,040 - Step 5: Solve for x
x = 13,181,504,789,158,040/129,504,590.28 - Step 6: Final answer
x = 101,784,073.91
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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.