Finding the Fourth Proportional to 137,511.97, 189,763.11 and 76,257.81
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Solution
The fourth proportional to 137,511.97, 189,763.11 and 76,257.81 is: 105,233.89
Step by Step Solution
- Step 1: Write the proportion equation
137,511.97 : 189,763.11 = 76,257.81 : x - Step 2: Convert to fraction form
137,511.97/189,763.11 = 76,257.81/x - Step 3: Cross multiply
137,511.97x = 189,763.11 × 76,257.81 - Step 4: Simplify right side
137,511.97x = 14,470,919,187.39 - Step 5: Solve for x
x = 14,470,919,187.39/137,511.97 - Step 6: Final answer
x = 105,233.89
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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.