Finding the Fourth Proportional to 103,689.02, 155,344.64 and 72,032.14
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Solution
The fourth proportional to 103,689.02, 155,344.64 and 72,032.14 is: 107,916.99
Step by Step Solution
- Step 1: Write the proportion equation
103,689.02 : 155,344.64 = 72,032.14 : x - Step 2: Convert to fraction form
103,689.02/155,344.64 = 72,032.14/x - Step 3: Cross multiply
103,689.02x = 155,344.64 × 72,032.14 - Step 4: Simplify right side
103,689.02x = 11,189,806,856.73 - Step 5: Solve for x
x = 11,189,806,856.73/103,689.02 - Step 6: Final answer
x = 107,916.99
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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.