Finding the Fourth Proportional to 136,218.24, 188,003.70 and 79,618.68
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Solution
The fourth proportional to 136,218.24, 188,003.70 and 79,618.68 is: 109,886.95
Step by Step Solution
- Step 1: Write the proportion equation
136,218.24 : 188,003.70 = 79,618.68 : x - Step 2: Convert to fraction form
136,218.24/188,003.70 = 79,618.68/x - Step 3: Cross multiply
136,218.24x = 188,003.70 × 79,618.68 - Step 4: Simplify right side
136,218.24x = 14,968,606,429.12 - Step 5: Solve for x
x = 14,968,606,429.12/136,218.24 - Step 6: Final answer
x = 109,886.95
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1.5x scale
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.