Finding the Fourth Proportional to 137,077.62, 189,174.49 and 76,648.07
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Solution
The fourth proportional to 137,077.62, 189,174.49 and 76,648.07 is: 105,778.47
Step by Step Solution
- Step 1: Write the proportion equation
137,077.62 : 189,174.49 = 76,648.07 : x - Step 2: Convert to fraction form
137,077.62/189,174.49 = 76,648.07/x - Step 3: Cross multiply
137,077.62x = 189,174.49 × 76,648.07 - Step 4: Simplify right side
137,077.62x = 14,499,859,833.05 - Step 5: Solve for x
x = 14,499,859,833.05/137,077.62 - Step 6: Final answer
x = 105,778.47
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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.