Finding the Fourth Proportional to 158,378.67, 218,387.43 and 100,926.99
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Solution
The fourth proportional to 158,378.67, 218,387.43 and 100,926.99 is: 139,167.64
Step by Step Solution
- Step 1: Write the proportion equation
158,378.67 : 218,387.43 = 100,926.99 : x - Step 2: Convert to fraction form
158,378.67/218,387.43 = 100,926.99/x - Step 3: Cross multiply
158,378.67x = 218,387.43 × 100,926.99 - Step 4: Simplify right side
158,378.67x = 22,041,185,459.10 - Step 5: Solve for x
x = 22,041,185,459.10/158,378.67 - Step 6: Final answer
x = 139,167.64
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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.