Finding the Fourth Proportional to 137,186.47, 206,807.94 and 128,042.08
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Solution
The fourth proportional to 137,186.47, 206,807.94 and 128,042.08 is: 193,022.81
Step by Step Solution
- Step 1: Write the proportion equation
137,186.47 : 206,807.94 = 128,042.08 : x - Step 2: Convert to fraction form
137,186.47/206,807.94 = 128,042.08/x - Step 3: Cross multiply
137,186.47x = 206,807.94 × 128,042.08 - Step 4: Simplify right side
137,186.47x = 26,480,118,281.10 - Step 5: Solve for x
x = 26,480,118,281.10/137,186.47 - Step 6: Final answer
x = 193,022.81
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.