Finding the Fourth Proportional to 135,362.85, 186,802.35 and 74,939.07
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Solution
The fourth proportional to 135,362.85, 186,802.35 and 74,939.07 is: 103,416.81
Step by Step Solution
- Step 1: Write the proportion equation
135,362.85 : 186,802.35 = 74,939.07 : x - Step 2: Convert to fraction form
135,362.85/186,802.35 = 74,939.07/x - Step 3: Cross multiply
135,362.85x = 186,802.35 × 74,939.07 - Step 4: Simplify right side
135,362.85x = 13,998,794,382.81 - Step 5: Solve for x
x = 13,998,794,382.81/135,362.85 - Step 6: Final answer
x = 103,416.81
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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.