Finding the Fourth Proportional to 153,114.30, 211,297.52 and 85,129.14
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Solution
The fourth proportional to 153,114.30, 211,297.52 and 85,129.14 is: 117,478.09
Step by Step Solution
- Step 1: Write the proportion equation
153,114.30 : 211,297.52 = 85,129.14 : x - Step 2: Convert to fraction form
153,114.30/211,297.52 = 85,129.14/x - Step 3: Cross multiply
153,114.30x = 211,297.52 × 85,129.14 - Step 4: Simplify right side
153,114.30x = 17,987,576,161.73 - Step 5: Solve for x
x = 17,987,576,161.73/153,114.30 - Step 6: Final answer
x = 117,478.09
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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.