Finding the Fourth Proportional to 211,691.42, 292,139.70 and 121,062.14
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Solution
The fourth proportional to 211,691.42, 292,139.70 and 121,062.14 is: 167,068.92
Step by Step Solution
- Step 1: Write the proportion equation
211,691.42 : 292,139.70 = 121,062.14 : x - Step 2: Convert to fraction form
211,691.42/292,139.70 = 121,062.14/x - Step 3: Cross multiply
211,691.42x = 292,139.70 × 121,062.14 - Step 4: Simplify right side
211,691.42x = 35,367,057,260.96 - Step 5: Solve for x
x = 35,367,057,260.96/211,691.42 - Step 6: Final answer
x = 167,068.92
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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.