Finding the Fourth Proportional to 138,444.84, 191,053.92 and 74,782.68
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Solution
The fourth proportional to 138,444.84, 191,053.92 and 74,782.68 is: 103,200.12
Step by Step Solution
- Step 1: Write the proportion equation
138,444.84 : 191,053.92 = 74,782.68 : x - Step 2: Convert to fraction form
138,444.84/191,053.92 = 74,782.68/x - Step 3: Cross multiply
138,444.84x = 191,053.92 × 74,782.68 - Step 4: Simplify right side
138,444.84x = 14,287,524,162.11 - Step 5: Solve for x
x = 14,287,524,162.11/138,444.84 - Step 6: Final answer
x = 103,200.12
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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.