Finding the Fourth Proportional to 121,855.24, 182,837.34 and 77,470.12
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Solution
The fourth proportional to 121,855.24, 182,837.34 and 77,470.12 is: 116,239.82
Step by Step Solution
- Step 1: Write the proportion equation
121,855.24 : 182,837.34 = 77,470.12 : x - Step 2: Convert to fraction form
121,855.24/182,837.34 = 77,470.12/x - Step 3: Cross multiply
121,855.24x = 182,837.34 × 77,470.12 - Step 4: Simplify right side
121,855.24x = 14,164,430,670.28 - Step 5: Solve for x
x = 14,164,430,670.28/121,855.24 - Step 6: Final answer
x = 116,239.82
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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.