Finding the Fourth Proportional to 117,853.40, 161,577.21 and 115,721.07
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Solution
The fourth proportional to 117,853.40, 161,577.21 and 115,721.07 is: 158,653.79
Step by Step Solution
- Step 1: Write the proportion equation
117,853.40 : 161,577.21 = 115,721.07 : x - Step 2: Convert to fraction form
117,853.40/161,577.21 = 115,721.07/x - Step 3: Cross multiply
117,853.40x = 161,577.21 × 115,721.07 - Step 4: Simplify right side
117,853.40x = 18,697,887,628.81 - Step 5: Solve for x
x = 18,697,887,628.81/117,853.40 - Step 6: Final answer
x = 158,653.79
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.