Finding the Fourth Proportional to 136,741,962.24, 188,703,951.36 and 74,866,229.76
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Solution
The fourth proportional to 136,741,962.24, 188,703,951.36 and 74,866,229.76 is: 103,315,420.87
Step by Step Solution
- Step 1: Write the proportion equation
136,741,962.24 : 188,703,951.36 = 74,866,229.76 : x - Step 2: Convert to fraction form
136,741,962.24/188,703,951.36 = 74,866,229.76/x - Step 3: Cross multiply
136,741,962.24x = 188,703,951.36 × 74,866,229.76 - Step 4: Simplify right side
136,741,962.24x = 14,127,553,379,137,626 - Step 5: Solve for x
x = 14,127,553,379,137,626/136,741,962.24 - Step 6: Final answer
x = 103,315,420.87
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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.