Finding the Fourth Proportional to 158,496.50, 218,721.73 and 86,874.99
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Solution
The fourth proportional to 158,496.50, 218,721.73 and 86,874.99 is: 119,885.60
Step by Step Solution
- Step 1: Write the proportion equation
158,496.50 : 218,721.73 = 86,874.99 : x - Step 2: Convert to fraction form
158,496.50/218,721.73 = 86,874.99/x - Step 3: Cross multiply
158,496.50x = 218,721.73 × 86,874.99 - Step 4: Simplify right side
158,496.50x = 19,001,448,106.53 - Step 5: Solve for x
x = 19,001,448,106.53/158,496.50 - Step 6: Final answer
x = 119,885.60
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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.