Finding the Fourth Proportional to 158,173.76, 218,285.55 and 90,189.99
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Solution
The fourth proportional to 158,173.76, 218,285.55 and 90,189.99 is: 124,465.47
Step by Step Solution
- Step 1: Write the proportion equation
158,173.76 : 218,285.55 = 90,189.99 : x - Step 2: Convert to fraction form
158,173.76/218,285.55 = 90,189.99/x - Step 3: Cross multiply
158,173.76x = 218,285.55 × 90,189.99 - Step 4: Simplify right side
158,173.76x = 19,687,171,571.64 - Step 5: Solve for x
x = 19,687,171,571.64/158,173.76 - Step 6: Final answer
x = 124,465.47
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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.