Finding the Fourth Proportional to 211,556.74, 291,974.15 and 120,916.53
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Solution
The fourth proportional to 211,556.74, 291,974.15 and 120,916.53 is: 166,879.59
Step by Step Solution
- Step 1: Write the proportion equation
211,556.74 : 291,974.15 = 120,916.53 : x - Step 2: Convert to fraction form
211,556.74/291,974.15 = 120,916.53/x - Step 3: Cross multiply
211,556.74x = 291,974.15 × 120,916.53 - Step 4: Simplify right side
211,556.74x = 35,304,501,067.70 - Step 5: Solve for x
x = 35,304,501,067.70/211,556.74 - Step 6: Final answer
x = 166,879.59
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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.