Finding the Fourth Proportional to 128,259,906.60, 176,993,929.26 and 69,521,310.62
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Solution
The fourth proportional to 128,259,906.60, 176,993,929.26 and 69,521,310.62 is: 95,936,838.40
Step by Step Solution
- Step 1: Write the proportion equation
128,259,906.60 : 176,993,929.26 = 69,521,310.62 : x - Step 2: Convert to fraction form
128,259,906.60/176,993,929.26 = 69,521,310.62/x - Step 3: Cross multiply
128,259,906.60x = 176,993,929.26 × 69,521,310.62 - Step 4: Simplify right side
128,259,906.60x = 12,304,849,933,053,796 - Step 5: Solve for x
x = 12,304,849,933,053,796/128,259,906.60 - Step 6: Final answer
x = 95,936,838.40
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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.