Finding the Fourth Proportional to 158,542.80, 218,786.58 and 86,923.44
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Solution
The fourth proportional to 158,542.80, 218,786.58 and 86,923.44 is: 119,952.99
Step by Step Solution
- Step 1: Write the proportion equation
158,542.80 : 218,786.58 = 86,923.44 : x - Step 2: Convert to fraction form
158,542.80/218,786.58 = 86,923.44/x - Step 3: Cross multiply
158,542.80x = 218,786.58 × 86,923.44 - Step 4: Simplify right side
158,542.80x = 19,017,682,159.44 - Step 5: Solve for x
x = 19,017,682,159.44/158,542.80 - Step 6: Final answer
x = 119,952.99
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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.