Finding the Fourth Proportional to 136,875.22, 188,883.96 and 76,444.09
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Solution
The fourth proportional to 136,875.22, 188,883.96 and 76,444.09 is: 105,490.70
Step by Step Solution
- Step 1: Write the proportion equation
136,875.22 : 188,883.96 = 76,444.09 : x - Step 2: Convert to fraction form
136,875.22/188,883.96 = 76,444.09/x - Step 3: Cross multiply
136,875.22x = 188,883.96 × 76,444.09 - Step 4: Simplify right side
136,875.22x = 14,439,062,437.80 - Step 5: Solve for x
x = 14,439,062,437.80/136,875.22 - Step 6: Final answer
x = 105,490.70
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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.