Finding the Fourth Proportional to 161,138,146.68, 222,370,674.42 and 87,799,288.68
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Solution
The fourth proportional to 161,138,146.68, 222,370,674.42 and 87,799,288.68 is: 121,163,035.82
Step by Step Solution
- Step 1: Write the proportion equation
161,138,146.68 : 222,370,674.42 = 87,799,288.68 : x - Step 2: Convert to fraction form
161,138,146.68/222,370,674.42 = 87,799,288.68/x - Step 3: Cross multiply
161,138,146.68x = 222,370,674.42 × 87,799,288.68 - Step 4: Simplify right side
161,138,146.68x = 19,523,987,037,367,872 - Step 5: Solve for x
x = 19,523,987,037,367,872/161,138,146.68 - Step 6: Final answer
x = 121,163,035.82
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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.