Finding the Fourth Proportional to 122,416.20, 183,624.30 and 72,649.80
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Solution
The fourth proportional to 122,416.20, 183,624.30 and 72,649.80 is: 108,974.70
Step by Step Solution
- Step 1: Write the proportion equation
122,416.20 : 183,624.30 = 72,649.80 : x - Step 2: Convert to fraction form
122,416.20/183,624.30 = 72,649.80/x - Step 3: Cross multiply
122,416.20x = 183,624.30 × 72,649.80 - Step 4: Simplify right side
122,416.20x = 13,340,268,670.14 - Step 5: Solve for x
x = 13,340,268,670.14/122,416.20 - Step 6: Final answer
x = 108,974.70
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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.