Finding the Fourth Proportional to 190,990.37, 286,387.01 and 85,719.26
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Solution
The fourth proportional to 190,990.37, 286,387.01 and 85,719.26 is: 128,534.66
Step by Step Solution
- Step 1: Write the proportion equation
190,990.37 : 286,387.01 = 85,719.26 : x - Step 2: Convert to fraction form
190,990.37/286,387.01 = 85,719.26/x - Step 3: Cross multiply
190,990.37x = 286,387.01 × 85,719.26 - Step 4: Simplify right side
190,990.37x = 24,548,882,142.22 - Step 5: Solve for x
x = 24,548,882,142.22/190,990.37 - Step 6: Final answer
x = 128,534.66
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.