Finding the Fourth Proportional to 121,911.36, 182,881.44 and 51,751.68
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Solution
The fourth proportional to 121,911.36, 182,881.44 and 51,751.68 is: 77,633.63
Step by Step Solution
- Step 1: Write the proportion equation
121,911.36 : 182,881.44 = 51,751.68 : x - Step 2: Convert to fraction form
121,911.36/182,881.44 = 51,751.68/x - Step 3: Cross multiply
121,911.36x = 182,881.44 × 51,751.68 - Step 4: Simplify right side
121,911.36x = 9,464,421,760.82 - Step 5: Solve for x
x = 9,464,421,760.82/121,911.36 - Step 6: Final answer
x = 77,633.63
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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.