Finding the Fourth Proportional to 202,723,786.50, 279,989,772.60 and 137,420,316.42
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Solution
The fourth proportional to 202,723,786.50, 279,989,772.60 and 137,420,316.42 is: 189,796,588.79
Step by Step Solution
- Step 1: Write the proportion equation
202,723,786.50 : 279,989,772.60 = 137,420,316.42 : x - Step 2: Convert to fraction form
202,723,786.50/279,989,772.60 = 137,420,316.42/x - Step 3: Cross multiply
202,723,786.50x = 279,989,772.60 × 137,420,316.42 - Step 4: Simplify right side
202,723,786.50x = 38,476,283,145,055,848 - Step 5: Solve for x
x = 38,476,283,145,055,848/202,723,786.50 - Step 6: Final answer
x = 189,796,588.79
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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.