Finding the Fourth Proportional to 158,551.11, 218,798.87 and 86,930.96
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Solution
The fourth proportional to 158,551.11, 218,798.87 and 86,930.96 is: 119,963.80
Step by Step Solution
- Step 1: Write the proportion equation
158,551.11 : 218,798.87 = 86,930.96 : x - Step 2: Convert to fraction form
158,551.11/218,798.87 = 86,930.96/x - Step 3: Cross multiply
158,551.11x = 218,798.87 × 86,930.96 - Step 4: Simplify right side
158,551.11x = 19,020,394,287.37 - Step 5: Solve for x
x = 19,020,394,287.37/158,551.11 - Step 6: Final answer
x = 119,963.80
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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.