Finding the Fourth Proportional to 211,785.18, 292,228.92 and 121,126.56
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Solution
The fourth proportional to 211,785.18, 292,228.92 and 121,126.56 is: 167,134.85
Step by Step Solution
- Step 1: Write the proportion equation
211,785.18 : 292,228.92 = 121,126.56 : x - Step 2: Convert to fraction form
211,785.18/292,228.92 = 121,126.56/x - Step 3: Cross multiply
211,785.18x = 292,228.92 × 121,126.56 - Step 4: Simplify right side
211,785.18x = 35,396,683,812.12 - Step 5: Solve for x
x = 35,396,683,812.12/211,785.18 - Step 6: Final answer
x = 167,134.85
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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.