Finding the Fourth Proportional to 137,889.10, 190,281.84 and 76,639.09
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Solution
The fourth proportional to 137,889.10, 190,281.84 and 76,639.09 is: 105,759.10
Step by Step Solution
- Step 1: Write the proportion equation
137,889.10 : 190,281.84 = 76,639.09 : x - Step 2: Convert to fraction form
137,889.10/190,281.84 = 76,639.09/x - Step 3: Cross multiply
137,889.10x = 190,281.84 × 76,639.09 - Step 4: Simplify right side
137,889.10x = 14,583,027,061.13 - Step 5: Solve for x
x = 14,583,027,061.13/137,889.10 - Step 6: Final answer
x = 105,759.10
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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.