Finding the Fourth Proportional to 121,761,689.40, 182,668,377.15 and 39,874,519.08
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Solution
The fourth proportional to 121,761,689.40, 182,668,377.15 and 39,874,519.08 is: 59,820,241.70
Step by Step Solution
- Step 1: Write the proportion equation
121,761,689.40 : 182,668,377.15 = 39,874,519.08 : x - Step 2: Convert to fraction form
121,761,689.40/182,668,377.15 = 39,874,519.08/x - Step 3: Cross multiply
121,761,689.40x = 182,668,377.15 × 39,874,519.08 - Step 4: Simplify right side
121,761,689.40x = 7,283,813,689,980,311 - Step 5: Solve for x
x = 7,283,813,689,980,311/121,761,689.40 - Step 6: Final answer
x = 59,820,241.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.