Finding the Fourth Proportional to 98,318.18, 135,690.60 and 55,883.09
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Solution
The fourth proportional to 98,318.18, 135,690.60 and 55,883.09 is: 77,125.20
Step by Step Solution
- Step 1: Write the proportion equation
98,318.18 : 135,690.60 = 55,883.09 : x - Step 2: Convert to fraction form
98,318.18/135,690.60 = 55,883.09/x - Step 3: Cross multiply
98,318.18x = 135,690.60 × 55,883.09 - Step 4: Simplify right side
98,318.18x = 7,582,809,333.50 - Step 5: Solve for x
x = 7,582,809,333.50/98,318.18 - Step 6: Final answer
x = 77,125.20
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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.