Finding the Fourth Proportional to 129,765,451.82, 179,076,376.87 and 71,028,412.79
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Solution
The fourth proportional to 129,765,451.82, 179,076,376.87 and 71,028,412.79 is: 98,019,238.85
Step by Step Solution
- Step 1: Write the proportion equation
129,765,451.82 : 179,076,376.87 = 71,028,412.79 : x - Step 2: Convert to fraction form
129,765,451.82/179,076,376.87 = 71,028,412.79/x - Step 3: Cross multiply
129,765,451.82x = 179,076,376.87 × 71,028,412.79 - Step 4: Simplify right side
129,765,451.82x = 12,719,510,816,187,016 - Step 5: Solve for x
x = 12,719,510,816,187,016/129,765,451.82 - Step 6: Final answer
x = 98,019,238.85
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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.