Finding the Fourth Proportional to 138,561.02, 191,213.91 and 74,898.66
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Solution
The fourth proportional to 138,561.02, 191,213.91 and 74,898.66 is: 103,359.99
Step by Step Solution
- Step 1: Write the proportion equation
138,561.02 : 191,213.91 = 74,898.66 : x - Step 2: Convert to fraction form
138,561.02/191,213.91 = 74,898.66/x - Step 3: Cross multiply
138,561.02x = 191,213.91 × 74,898.66 - Step 4: Simplify right side
138,561.02x = 14,321,665,632.36 - Step 5: Solve for x
x = 14,321,665,632.36/138,561.02 - Step 6: Final answer
x = 103,359.99
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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.