Finding the Fourth Proportional to 137,277.12, 189,431.96 and 76,833.92
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Solution
The fourth proportional to 137,277.12, 189,431.96 and 76,833.92 is: 106,024.95
Step by Step Solution
- Step 1: Write the proportion equation
137,277.12 : 189,431.96 = 76,833.92 : x - Step 2: Convert to fraction form
137,277.12/189,431.96 = 76,833.92/x - Step 3: Cross multiply
137,277.12x = 189,431.96 × 76,833.92 - Step 4: Simplify right side
137,277.12x = 14,554,800,060.08 - Step 5: Solve for x
x = 14,554,800,060.08/137,277.12 - Step 6: Final answer
x = 106,024.95
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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.