Finding the Fourth Proportional to 158,106.87, 218,190.78 and 86,491.53
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Solution
The fourth proportional to 158,106.87, 218,190.78 and 86,491.53 is: 119,360.12
Step by Step Solution
- Step 1: Write the proportion equation
158,106.87 : 218,190.78 = 86,491.53 : x - Step 2: Convert to fraction form
158,106.87/218,190.78 = 86,491.53/x - Step 3: Cross multiply
158,106.87x = 218,190.78 × 86,491.53 - Step 4: Simplify right side
158,106.87x = 18,871,654,394.09 - Step 5: Solve for x
x = 18,871,654,394.09/158,106.87 - Step 6: Final answer
x = 119,360.12
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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.