Finding the Fourth Proportional to 135,398.17, 186,859.99 and 74,974.43
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Solution
The fourth proportional to 135,398.17, 186,859.99 and 74,974.43 is: 103,470.54
Step by Step Solution
- Step 1: Write the proportion equation
135,398.17 : 186,859.99 = 74,974.43 : x - Step 2: Convert to fraction form
135,398.17/186,859.99 = 74,974.43/x - Step 3: Cross multiply
135,398.17x = 186,859.99 × 74,974.43 - Step 4: Simplify right side
135,398.17x = 14,009,721,707.21 - Step 5: Solve for x
x = 14,009,721,707.21/135,398.17 - Step 6: Final answer
x = 103,470.54
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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.