Finding the Fourth Proportional to 112,752,893.80, 169,129,340.70 and 74,489,141.80
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Solution
The fourth proportional to 112,752,893.80, 169,129,340.70 and 74,489,141.80 is: 111,733,712.70
Step by Step Solution
- Step 1: Write the proportion equation
112,752,893.80 : 169,129,340.70 = 74,489,141.80 : x - Step 2: Convert to fraction form
112,752,893.80/169,129,340.70 = 74,489,141.80/x - Step 3: Cross multiply
112,752,893.80x = 169,129,340.70 × 74,489,141.80 - Step 4: Simplify right side
112,752,893.80x = 12,598,299,441,942,810 - Step 5: Solve for x
x = 12,598,299,441,942,810/112,752,893.80 - Step 6: Final answer
x = 111,733,712.70
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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.