Finding the Fourth Proportional to 131,023.54, 180,813.09 and 74,438.02
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Solution
The fourth proportional to 131,023.54, 180,813.09 and 74,438.02 is: 102,724.81
Step by Step Solution
- Step 1: Write the proportion equation
131,023.54 : 180,813.09 = 74,438.02 : x - Step 2: Convert to fraction form
131,023.54/180,813.09 = 74,438.02/x - Step 3: Cross multiply
131,023.54x = 180,813.09 × 74,438.02 - Step 4: Simplify right side
131,023.54x = 13,459,368,409.68 - Step 5: Solve for x
x = 13,459,368,409.68/131,023.54 - Step 6: Final answer
x = 102,724.81
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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.