Finding the Fourth Proportional to 116,946.80, 161,349.75 and 71,577.49
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Solution
The fourth proportional to 116,946.80, 161,349.75 and 71,577.49 is: 98,754.39
Step by Step Solution
- Step 1: Write the proportion equation
116,946.80 : 161,349.75 = 71,577.49 : x - Step 2: Convert to fraction form
116,946.80/161,349.75 = 71,577.49/x - Step 3: Cross multiply
116,946.80x = 161,349.75 × 71,577.49 - Step 4: Simplify right side
116,946.80x = 11,549,010,016.28 - Step 5: Solve for x
x = 11,549,010,016.28/116,946.80 - Step 6: Final answer
x = 98,754.39
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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.