Finding the Fourth Proportional to 211,505.18, 291,942.51 and 136,053.68
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Solution
The fourth proportional to 211,505.18, 291,942.51 and 136,053.68 is: 187,796.12
Step by Step Solution
- Step 1: Write the proportion equation
211,505.18 : 291,942.51 = 136,053.68 : x - Step 2: Convert to fraction form
211,505.18/291,942.51 = 136,053.68/x - Step 3: Cross multiply
211,505.18x = 291,942.51 × 136,053.68 - Step 4: Simplify right side
211,505.18x = 39,719,852,833.94 - Step 5: Solve for x
x = 39,719,852,833.94/211,505.18 - Step 6: Final answer
x = 187,796.12
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1.5x scale
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.