Finding the Fourth Proportional to 116,908.40, 161,295.35 and 71,539.08
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Solution
The fourth proportional to 116,908.40, 161,295.35 and 71,539.08 is: 98,700.53
Step by Step Solution
- Step 1: Write the proportion equation
116,908.40 : 161,295.35 = 71,539.08 : x - Step 2: Convert to fraction form
116,908.40/161,295.35 = 71,539.08/x - Step 3: Cross multiply
116,908.40x = 161,295.35 × 71,539.08 - Step 4: Simplify right side
116,908.40x = 11,538,920,589.58 - Step 5: Solve for x
x = 11,538,920,589.58/116,908.40 - Step 6: Final answer
x = 98,700.53
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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.