Finding the Fourth Proportional to 158,691.08, 218,997.73 and 87,071.09
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Solution
The fourth proportional to 158,691.08, 218,997.73 and 87,071.09 is: 120,160.31
Step by Step Solution
- Step 1: Write the proportion equation
158,691.08 : 218,997.73 = 87,071.09 : x - Step 2: Convert to fraction form
158,691.08/218,997.73 = 87,071.09/x - Step 3: Cross multiply
158,691.08x = 218,997.73 × 87,071.09 - Step 4: Simplify right side
158,691.08x = 19,068,370,072.48 - Step 5: Solve for x
x = 19,068,370,072.48/158,691.08 - Step 6: Final answer
x = 120,160.31
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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.