Finding the Fourth Proportional to 121,455.20, 182,182.80 and 38,349.20
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Solution
The fourth proportional to 121,455.20, 182,182.80 and 38,349.20 is: 57,523.80
Step by Step Solution
- Step 1: Write the proportion equation
121,455.20 : 182,182.80 = 38,349.20 : x - Step 2: Convert to fraction form
121,455.20/182,182.80 = 38,349.20/x - Step 3: Cross multiply
121,455.20x = 182,182.80 × 38,349.20 - Step 4: Simplify right side
121,455.20x = 6,986,564,633.76 - Step 5: Solve for x
x = 6,986,564,633.76/121,455.20 - Step 6: Final answer
x = 57,523.80
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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.