Finding the Fourth Proportional to 139,439.18, 192,427.29 and 75,776.99
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Solution
The fourth proportional to 139,439.18, 192,427.29 and 75,776.99 is: 104,572.90
Step by Step Solution
- Step 1: Write the proportion equation
139,439.18 : 192,427.29 = 75,776.99 : x - Step 2: Convert to fraction form
139,439.18/192,427.29 = 75,776.99/x - Step 3: Cross multiply
139,439.18x = 192,427.29 × 75,776.99 - Step 4: Simplify right side
139,439.18x = 14,581,559,489.04 - Step 5: Solve for x
x = 14,581,559,489.04/139,439.18 - Step 6: Final answer
x = 104,572.90
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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.