Finding the Fourth Proportional to 211,787.38, 292,292.91 and 121,130.77
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Solution
The fourth proportional to 211,787.38, 292,292.91 and 121,130.77 is: 167,175.52
Step by Step Solution
- Step 1: Write the proportion equation
211,787.38 : 292,292.91 = 121,130.77 : x - Step 2: Convert to fraction form
211,787.38/292,292.91 = 121,130.77/x - Step 3: Cross multiply
211,787.38x = 292,292.91 × 121,130.77 - Step 4: Simplify right side
211,787.38x = 35,405,665,253.84 - Step 5: Solve for x
x = 35,405,665,253.84/211,787.38 - Step 6: Final answer
x = 167,175.52
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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.