Finding the Fourth Proportional to 117,202.82, 161,695.20 and 86,649.32
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Solution
The fourth proportional to 117,202.82, 161,695.20 and 86,649.32 is: 119,543.02
Step by Step Solution
- Step 1: Write the proportion equation
117,202.82 : 161,695.20 = 86,649.32 : x - Step 2: Convert to fraction form
117,202.82/161,695.20 = 86,649.32/x - Step 3: Cross multiply
117,202.82x = 161,695.20 × 86,649.32 - Step 4: Simplify right side
117,202.82x = 14,010,779,127.26 - Step 5: Solve for x
x = 14,010,779,127.26/117,202.82 - Step 6: Final answer
x = 119,543.02
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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.