Finding the Fourth Proportional to 136,218.93, 187,979.18 and 78,860.67
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Solution
The fourth proportional to 136,218.93, 187,979.18 and 78,860.67 is: 108,826.02
Step by Step Solution
- Step 1: Write the proportion equation
136,218.93 : 187,979.18 = 78,860.67 : x - Step 2: Convert to fraction form
136,218.93/187,979.18 = 78,860.67/x - Step 3: Cross multiply
136,218.93x = 187,979.18 × 78,860.67 - Step 4: Simplify right side
136,218.93x = 14,824,164,080.85 - Step 5: Solve for x
x = 14,824,164,080.85/136,218.93 - Step 6: Final answer
x = 108,826.02
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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.