Finding the Fourth Proportional to 158,508.73, 218,743.01 and 86,888.53
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Solution
The fourth proportional to 158,508.73, 218,743.01 and 86,888.53 is: 119,906.70
Step by Step Solution
- Step 1: Write the proportion equation
158,508.73 : 218,743.01 = 86,888.53 : x - Step 2: Convert to fraction form
158,508.73/218,743.01 = 86,888.53/x - Step 3: Cross multiply
158,508.73x = 218,743.01 × 86,888.53 - Step 4: Simplify right side
158,508.73x = 19,006,258,586.68 - Step 5: Solve for x
x = 19,006,258,586.68/158,508.73 - Step 6: Final answer
x = 119,906.70
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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.