Finding the Fourth Proportional to 158,545.36, 218,786.80 and 86,923.84
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Solution
The fourth proportional to 158,545.36, 218,786.80 and 86,923.84 is: 119,951.72
Step by Step Solution
- Step 1: Write the proportion equation
158,545.36 : 218,786.80 = 86,923.84 : x - Step 2: Convert to fraction form
158,545.36/218,786.80 = 86,923.84/x - Step 3: Cross multiply
158,545.36x = 218,786.80 × 86,923.84 - Step 4: Simplify right side
158,545.36x = 19,017,788,797.31 - Step 5: Solve for x
x = 19,017,788,797.31/158,545.36 - Step 6: Final answer
x = 119,951.72
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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.