Finding the Fourth Proportional to 211,503.18, 291,939.75 and 136,051.68
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Solution
The fourth proportional to 211,503.18, 291,939.75 and 136,051.68 is: 187,793.36
Step by Step Solution
- Step 1: Write the proportion equation
211,503.18 : 291,939.75 = 136,051.68 : x - Step 2: Convert to fraction form
211,503.18/291,939.75 = 136,051.68/x - Step 3: Cross multiply
211,503.18x = 291,939.75 × 136,051.68 - Step 4: Simplify right side
211,503.18x = 39,718,894,541.05 - Step 5: Solve for x
x = 39,718,894,541.05/211,503.18 - Step 6: Final answer
x = 187,793.36
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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.