Finding the Fourth Proportional to 153,068.75, 211,237.40 and 84,161.13
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Solution
The fourth proportional to 153,068.75, 211,237.40 and 84,161.13 is: 116,143.75
Step by Step Solution
- Step 1: Write the proportion equation
153,068.75 : 211,237.40 = 84,161.13 : x - Step 2: Convert to fraction form
153,068.75/211,237.40 = 84,161.13/x - Step 3: Cross multiply
153,068.75x = 211,237.40 × 84,161.13 - Step 4: Simplify right side
153,068.75x = 17,777,978,282.26 - Step 5: Solve for x
x = 17,777,978,282.26/153,068.75 - Step 6: Final answer
x = 116,143.75
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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.