Finding the Fourth Proportional to 135,340.74, 186,744.29 and 74,908.53
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Solution
The fourth proportional to 135,340.74, 186,744.29 and 74,908.53 is: 103,359.42
Step by Step Solution
- Step 1: Write the proportion equation
135,340.74 : 186,744.29 = 74,908.53 : x - Step 2: Convert to fraction form
135,340.74/186,744.29 = 74,908.53/x - Step 3: Cross multiply
135,340.74x = 186,744.29 × 74,908.53 - Step 4: Simplify right side
135,340.74x = 13,988,739,875.25 - Step 5: Solve for x
x = 13,988,739,875.25/135,340.74 - Step 6: Final answer
x = 103,359.42
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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.