Finding the Fourth Proportional to 112,417,221.36, 155,075,923.08 and 68,377,689.84
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Solution
The fourth proportional to 112,417,221.36, 155,075,923.08 and 68,377,689.84 is: 94,324,812.89
Step by Step Solution
- Step 1: Write the proportion equation
112,417,221.36 : 155,075,923.08 = 68,377,689.84 : x - Step 2: Convert to fraction form
112,417,221.36/155,075,923.08 = 68,377,689.84/x - Step 3: Cross multiply
112,417,221.36x = 155,075,923.08 × 68,377,689.84 - Step 4: Simplify right side
112,417,221.36x = 10,603,733,370,015,938 - Step 5: Solve for x
x = 10,603,733,370,015,938/112,417,221.36 - Step 6: Final answer
x = 94,324,812.89
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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.