Finding the Fourth Proportional to 102,916.74, 154,302.21 and 39,683.28
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Solution
The fourth proportional to 102,916.74, 154,302.21 and 39,683.28 is: 59,496.81
Step by Step Solution
- Step 1: Write the proportion equation
102,916.74 : 154,302.21 = 39,683.28 : x - Step 2: Convert to fraction form
102,916.74/154,302.21 = 39,683.28/x - Step 3: Cross multiply
102,916.74x = 154,302.21 × 39,683.28 - Step 4: Simplify right side
102,916.74x = 6,123,217,804.05 - Step 5: Solve for x
x = 6,123,217,804.05/102,916.74 - Step 6: Final answer
x = 59,496.81
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.