Finding the Fourth Proportional to 136,407.68, 188,243.16 and 79,808.12
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Solution
The fourth proportional to 136,407.68, 188,243.16 and 79,808.12 is: 110,135.53
Step by Step Solution
- Step 1: Write the proportion equation
136,407.68 : 188,243.16 = 79,808.12 : x - Step 2: Convert to fraction form
136,407.68/188,243.16 = 79,808.12/x - Step 3: Cross multiply
136,407.68x = 188,243.16 × 79,808.12 - Step 4: Simplify right side
136,407.68x = 15,023,332,702.46 - Step 5: Solve for x
x = 15,023,332,702.46/136,407.68 - Step 6: Final answer
x = 110,135.53
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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.