Finding the Fourth Proportional to 120,264.62, 180,459.18 and 87,257.12
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Solution
The fourth proportional to 120,264.62, 180,459.18 and 87,257.12 is: 130,930.84
Step by Step Solution
- Step 1: Write the proportion equation
120,264.62 : 180,459.18 = 87,257.12 : x - Step 2: Convert to fraction form
120,264.62/180,459.18 = 87,257.12/x - Step 3: Cross multiply
120,264.62x = 180,459.18 × 87,257.12 - Step 4: Simplify right side
120,264.62x = 15,746,347,422.07 - Step 5: Solve for x
x = 15,746,347,422.07/120,264.62 - Step 6: Final answer
x = 130,930.84
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.