Finding the Fourth Proportional to 137,456.98, 189,690.39 and 83,741.99
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Solution
The fourth proportional to 137,456.98, 189,690.39 and 83,741.99 is: 115,563.79
Step by Step Solution
- Step 1: Write the proportion equation
137,456.98 : 189,690.39 = 83,741.99 : x - Step 2: Convert to fraction form
137,456.98/189,690.39 = 83,741.99/x - Step 3: Cross multiply
137,456.98x = 189,690.39 × 83,741.99 - Step 4: Simplify right side
137,456.98x = 15,885,049,794.02 - Step 5: Solve for x
x = 15,885,049,794.02/137,456.98 - Step 6: Final answer
x = 115,563.79
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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.