Finding the Fourth Proportional to 135,456.48, 186,927.89 and 74,202.19
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Solution
The fourth proportional to 135,456.48, 186,927.89 and 74,202.19 is: 102,397.89
Step by Step Solution
- Step 1: Write the proportion equation
135,456.48 : 186,927.89 = 74,202.19 : x - Step 2: Convert to fraction form
135,456.48/186,927.89 = 74,202.19/x - Step 3: Cross multiply
135,456.48x = 186,927.89 × 74,202.19 - Step 4: Simplify right side
135,456.48x = 13,870,457,971.75 - Step 5: Solve for x
x = 13,870,457,971.75/135,456.48 - Step 6: Final answer
x = 102,397.89
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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.