Finding the Fourth Proportional to 138,468.24, 191,085.84 and 74,805.84
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Solution
The fourth proportional to 138,468.24, 191,085.84 and 74,805.84 is: 103,231.88
Step by Step Solution
- Step 1: Write the proportion equation
138,468.24 : 191,085.84 = 74,805.84 : x - Step 2: Convert to fraction form
138,468.24/191,085.84 = 74,805.84/x - Step 3: Cross multiply
138,468.24x = 191,085.84 × 74,805.84 - Step 4: Simplify right side
138,468.24x = 14,294,336,773.31 - Step 5: Solve for x
x = 14,294,336,773.31/138,468.24 - Step 6: Final answer
x = 103,231.88
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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.