Finding the Fourth Proportional to 181,656,142.80, 251,013,393.68 and 129,354,376.72
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Solution
The fourth proportional to 181,656,142.80, 251,013,393.68 and 129,354,376.72 is: 178,742,543.95
Step by Step Solution
- Step 1: Write the proportion equation
181,656,142.80 : 251,013,393.68 = 129,354,376.72 : x - Step 2: Convert to fraction form
181,656,142.80/251,013,393.68 = 129,354,376.72/x - Step 3: Cross multiply
181,656,142.80x = 251,013,393.68 × 129,354,376.72 - Step 4: Simplify right side
181,656,142.80x = 32,469,681,087,848,388 - Step 5: Solve for x
x = 32,469,681,087,848,388/181,656,142.80 - Step 6: Final answer
x = 178,742,543.95
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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.