Finding the Fourth Proportional to 136,821,657.94, 188,816,341.35 and 74,938,010.70
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Solution
The fourth proportional to 136,821,657.94, 188,816,341.35 and 74,938,010.70 is: 103,415,798.50
Step by Step Solution
- Step 1: Write the proportion equation
136,821,657.94 : 188,816,341.35 = 74,938,010.70 : x - Step 2: Convert to fraction form
136,821,657.94/188,816,341.35 = 74,938,010.70/x - Step 3: Cross multiply
136,821,657.94x = 188,816,341.35 × 74,938,010.70 - Step 4: Simplify right side
136,821,657.94x = 14,149,521,008,421,152 - Step 5: Solve for x
x = 14,149,521,008,421,152/136,821,657.94 - Step 6: Final answer
x = 103,415,798.50
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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.