Finding the Fourth Proportional to 136,893.18, 188,910.58 and 76,464.67
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Solution
The fourth proportional to 136,893.18, 188,910.58 and 76,464.67 is: 105,520.12
Step by Step Solution
- Step 1: Write the proportion equation
136,893.18 : 188,910.58 = 76,464.67 : x - Step 2: Convert to fraction form
136,893.18/188,910.58 = 76,464.67/x - Step 3: Cross multiply
136,893.18x = 188,910.58 × 76,464.67 - Step 4: Simplify right side
136,893.18x = 14,444,985,159.21 - Step 5: Solve for x
x = 14,444,985,159.21/136,893.18 - Step 6: Final answer
x = 105,520.12
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1.5x scale
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.