Finding the Fourth Proportional to 112,666,816.24, 155,402,578.35 and 79,247,174.94
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Solution
The fourth proportional to 112,666,816.24, 155,402,578.35 and 79,247,174.94 is: 109,306,499.68
Step by Step Solution
- Step 1: Write the proportion equation
112,666,816.24 : 155,402,578.35 = 79,247,174.94 : x - Step 2: Convert to fraction form
112,666,816.24/155,402,578.35 = 79,247,174.94/x - Step 3: Cross multiply
112,666,816.24x = 155,402,578.35 × 79,247,174.94 - Step 4: Simplify right side
112,666,816.24x = 12,315,215,312,629,506 - Step 5: Solve for x
x = 12,315,215,312,629,506/112,666,816.24 - Step 6: Final answer
x = 109,306,499.68
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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.