Finding the Fourth Proportional to 115,971.82, 160,026.16 and 68,207.74
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Solution
The fourth proportional to 115,971.82, 160,026.16 and 68,207.74 is: 94,117.89
Step by Step Solution
- Step 1: Write the proportion equation
115,971.82 : 160,026.16 = 68,207.74 : x - Step 2: Convert to fraction form
115,971.82/160,026.16 = 68,207.74/x - Step 3: Cross multiply
115,971.82x = 160,026.16 × 68,207.74 - Step 4: Simplify right side
115,971.82x = 10,915,022,714.48 - Step 5: Solve for x
x = 10,915,022,714.48/115,971.82 - Step 6: Final answer
x = 94,117.89
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1.5x scale
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.