Finding the Fourth Proportional to 86,253.68, 118,394.14 and 76,611.44
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Solution
The fourth proportional to 86,253.68, 118,394.14 and 76,611.44 is: 105,158.94
Step by Step Solution
- Step 1: Write the proportion equation
86,253.68 : 118,394.14 = 76,611.44 : x - Step 2: Convert to fraction form
86,253.68/118,394.14 = 76,611.44/x - Step 3: Cross multiply
86,253.68x = 118,394.14 × 76,611.44 - Step 4: Simplify right side
86,253.68x = 9,070,345,552.96 - Step 5: Solve for x
x = 9,070,345,552.96/86,253.68 - Step 6: Final answer
x = 105,158.94
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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.