Finding the Fourth Proportional to 121,607.20, 182,313.60 and 51,428.80
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Solution
The fourth proportional to 121,607.20, 182,313.60 and 51,428.80 is: 77,102.09
Step by Step Solution
- Step 1: Write the proportion equation
121,607.20 : 182,313.60 = 51,428.80 : x - Step 2: Convert to fraction form
121,607.20/182,313.60 = 51,428.80/x - Step 3: Cross multiply
121,607.20x = 182,313.60 × 51,428.80 - Step 4: Simplify right side
121,607.20x = 9,376,169,671.68 - Step 5: Solve for x
x = 9,376,169,671.68/121,607.20 - Step 6: Final answer
x = 77,102.09
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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.