Finding the Fourth Proportional to 131,136,057.36, 180,968,028.66 and 72,398,836.08
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Solution
The fourth proportional to 131,136,057.36, 180,968,028.66 and 72,398,836.08 is: 99,910,542.58
Step by Step Solution
- Step 1: Write the proportion equation
131,136,057.36 : 180,968,028.66 = 72,398,836.08 : x - Step 2: Convert to fraction form
131,136,057.36/180,968,028.66 = 72,398,836.08/x - Step 3: Cross multiply
131,136,057.36x = 180,968,028.66 × 72,398,836.08 - Step 4: Simplify right side
131,136,057.36x = 13,101,874,642,676,082 - Step 5: Solve for x
x = 13,101,874,642,676,082/131,136,057.36 - Step 6: Final answer
x = 99,910,542.58
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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.