Finding the Fourth Proportional to 136,530.48, 188,436.84 and 79,206.48
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Solution
The fourth proportional to 136,530.48, 188,436.84 and 79,206.48 is: 109,319.32
Step by Step Solution
- Step 1: Write the proportion equation
136,530.48 : 188,436.84 = 79,206.48 : x - Step 2: Convert to fraction form
136,530.48/188,436.84 = 79,206.48/x - Step 3: Cross multiply
136,530.48x = 188,436.84 × 79,206.48 - Step 4: Simplify right side
136,530.48x = 14,925,418,798.72 - Step 5: Solve for x
x = 14,925,418,798.72/136,530.48 - Step 6: Final answer
x = 109,319.32
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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.