Finding the Fourth Proportional to 112,908.06, 169,390.56 and 79,692.99
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Solution
The fourth proportional to 112,908.06, 169,390.56 and 79,692.99 is: 119,559.58
Step by Step Solution
- Step 1: Write the proportion equation
112,908.06 : 169,390.56 = 79,692.99 : x - Step 2: Convert to fraction form
112,908.06/169,390.56 = 79,692.99/x - Step 3: Cross multiply
112,908.06x = 169,390.56 × 79,692.99 - Step 4: Simplify right side
112,908.06x = 13,499,240,204.17 - Step 5: Solve for x
x = 13,499,240,204.17/112,908.06 - Step 6: Final answer
x = 119,559.58
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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.