Finding the Fourth Proportional to 121,518.58, 167,675.52 and 81,167.62
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Solution
The fourth proportional to 121,518.58, 167,675.52 and 81,167.62 is: 111,997.88
Step by Step Solution
- Step 1: Write the proportion equation
121,518.58 : 167,675.52 = 81,167.62 : x - Step 2: Convert to fraction form
121,518.58/167,675.52 = 81,167.62/x - Step 3: Cross multiply
121,518.58x = 167,675.52 × 81,167.62 - Step 4: Simplify right side
121,518.58x = 13,609,822,890.66 - Step 5: Solve for x
x = 13,609,822,890.66/121,518.58 - Step 6: Final answer
x = 111,997.88
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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.