Finding the Fourth Proportional to 121,457.40, 182,186.10 and 51,415.80
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Solution
The fourth proportional to 121,457.40, 182,186.10 and 51,415.80 is: 77,123.70
Step by Step Solution
- Step 1: Write the proportion equation
121,457.40 : 182,186.10 = 51,415.80 : x - Step 2: Convert to fraction form
121,457.40/182,186.10 = 51,415.80/x - Step 3: Cross multiply
121,457.40x = 182,186.10 × 51,415.80 - Step 4: Simplify right side
121,457.40x = 9,367,244,080.38 - Step 5: Solve for x
x = 9,367,244,080.38/121,457.40 - Step 6: Final answer
x = 77,123.70
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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.