Finding the Fourth Proportional to 151,921,836.67, 209,651,311.16 and 84,940,781.69
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Solution
The fourth proportional to 151,921,836.67, 209,651,311.16 and 84,940,781.69 is: 117,217,818.33
Step by Step Solution
- Step 1: Write the proportion equation
151,921,836.67 : 209,651,311.16 = 84,940,781.69 : x - Step 2: Convert to fraction form
151,921,836.67/209,651,311.16 = 84,940,781.69/x - Step 3: Cross multiply
151,921,836.67x = 209,651,311.16 × 84,940,781.69 - Step 4: Simplify right side
151,921,836.67x = 17,807,946,251,582,184 - Step 5: Solve for x
x = 17,807,946,251,582,184/151,921,836.67 - Step 6: Final answer
x = 117,217,818.33
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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.