Finding the Fourth Proportional to 151,384,330.25, 208,910,455.79 and 81,769,710.99
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Solution
The fourth proportional to 151,384,330.25, 208,910,455.79 and 81,769,710.99 is: 112,842,244.40
Step by Step Solution
- Step 1: Write the proportion equation
151,384,330.25 : 208,910,455.79 = 81,769,710.99 : x - Step 2: Convert to fraction form
151,384,330.25/208,910,455.79 = 81,769,710.99/x - Step 3: Cross multiply
151,384,330.25x = 208,910,455.79 × 81,769,710.99 - Step 4: Simplify right side
151,384,330.25x = 17,082,547,592,737,470 - Step 5: Solve for x
x = 17,082,547,592,737,470/151,384,330.25 - Step 6: Final answer
x = 112,842,244.40
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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.