Finding the Fourth Proportional to 122,791.28, 169,438.23 and 69,075.18
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Solution
The fourth proportional to 122,791.28, 169,438.23 and 69,075.18 is: 95,316.02
Step by Step Solution
- Step 1: Write the proportion equation
122,791.28 : 169,438.23 = 69,075.18 : x - Step 2: Convert to fraction form
122,791.28/169,438.23 = 69,075.18/x - Step 3: Cross multiply
122,791.28x = 169,438.23 × 69,075.18 - Step 4: Simplify right side
122,791.28x = 11,703,976,236.13 - Step 5: Solve for x
x = 11,703,976,236.13/122,791.28 - Step 6: Final answer
x = 95,316.02
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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.