Finding the Fourth Proportional to 123,781,710.36, 170,822,855.79 and 68,029,106.97
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Solution
The fourth proportional to 123,781,710.36, 170,822,855.79 and 68,029,106.97 is: 93,882,418.46
Step by Step Solution
- Step 1: Write the proportion equation
123,781,710.36 : 170,822,855.79 = 68,029,106.97 : x - Step 2: Convert to fraction form
123,781,710.36/170,822,855.79 = 68,029,106.97/x - Step 3: Cross multiply
123,781,710.36x = 170,822,855.79 × 68,029,106.97 - Step 4: Simplify right side
123,781,710.36x = 11,620,926,329,458,794 - Step 5: Solve for x
x = 11,620,926,329,458,794/123,781,710.36 - Step 6: Final answer
x = 93,882,418.46
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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.