Finding the Fourth Proportional to 185,394.62, 255,708.69 and 121,709.18
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Solution
The fourth proportional to 185,394.62, 255,708.69 and 121,709.18 is: 167,869.46
Step by Step Solution
- Step 1: Write the proportion equation
185,394.62 : 255,708.69 = 121,709.18 : x - Step 2: Convert to fraction form
185,394.62/255,708.69 = 121,709.18/x - Step 3: Cross multiply
185,394.62x = 255,708.69 × 121,709.18 - Step 4: Simplify right side
185,394.62x = 31,122,094,978.77 - Step 5: Solve for x
x = 31,122,094,978.77/185,394.62 - Step 6: Final answer
x = 167,869.46
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.