Finding the Fourth Proportional to 122,276.61, 168,670.05 and 76,882.65
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Solution
The fourth proportional to 122,276.61, 168,670.05 and 76,882.65 is: 106,052.99
Step by Step Solution
- Step 1: Write the proportion equation
122,276.61 : 168,670.05 = 76,882.65 : x - Step 2: Convert to fraction form
122,276.61/168,670.05 = 76,882.65/x - Step 3: Cross multiply
122,276.61x = 168,670.05 × 76,882.65 - Step 4: Simplify right side
122,276.61x = 12,967,800,419.63 - Step 5: Solve for x
x = 12,967,800,419.63/122,276.61 - Step 6: Final answer
x = 106,052.99
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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.