Finding the Fourth Proportional to 201,929.77, 278,676.23 and 115,916.60
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Solution
The fourth proportional to 201,929.77, 278,676.23 and 115,916.60 is: 159,972.45
Step by Step Solution
- Step 1: Write the proportion equation
201,929.77 : 278,676.23 = 115,916.60 : x - Step 2: Convert to fraction form
201,929.77/278,676.23 = 115,916.60/x - Step 3: Cross multiply
201,929.77x = 278,676.23 × 115,916.60 - Step 4: Simplify right side
201,929.77x = 32,303,199,689.04 - Step 5: Solve for x
x = 32,303,199,689.04/201,929.77 - Step 6: Final answer
x = 159,972.45
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1.5x scale
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.