Finding the Fourth Proportional to 112,158.87, 154,796.03 and 71,918.07
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Solution
The fourth proportional to 112,158.87, 154,796.03 and 71,918.07 is: 99,257.70
Step by Step Solution
- Step 1: Write the proportion equation
112,158.87 : 154,796.03 = 71,918.07 : x - Step 2: Convert to fraction form
112,158.87/154,796.03 = 71,918.07/x - Step 3: Cross multiply
112,158.87x = 154,796.03 × 71,918.07 - Step 4: Simplify right side
112,158.87x = 11,132,631,721.26 - Step 5: Solve for x
x = 11,132,631,721.26/112,158.87 - Step 6: Final answer
x = 99,257.70
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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.