Finding the Fourth Proportional to 131,025.24, 180,813.84 and 74,436.62
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Solution
The fourth proportional to 131,025.24, 180,813.84 and 74,436.62 is: 102,721.96
Step by Step Solution
- Step 1: Write the proportion equation
131,025.24 : 180,813.84 = 74,436.62 : x - Step 2: Convert to fraction form
131,025.24/180,813.84 = 74,436.62/x - Step 3: Cross multiply
131,025.24x = 180,813.84 × 74,436.62 - Step 4: Simplify right side
131,025.24x = 13,459,169,915.61 - Step 5: Solve for x
x = 13,459,169,915.61/131,025.24 - Step 6: Final answer
x = 102,721.96
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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.