Finding the Fourth Proportional to 136,478.04, 204,678.18 and 86,482.68
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Solution
The fourth proportional to 136,478.04, 204,678.18 and 86,482.68 is: 129,699.38
Step by Step Solution
- Step 1: Write the proportion equation
136,478.04 : 204,678.18 = 86,482.68 : x - Step 2: Convert to fraction form
136,478.04/204,678.18 = 86,482.68/x - Step 3: Cross multiply
136,478.04x = 204,678.18 × 86,482.68 - Step 4: Simplify right side
136,478.04x = 17,701,117,543.92 - Step 5: Solve for x
x = 17,701,117,543.92/136,478.04 - Step 6: Final answer
x = 129,699.38
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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.