Finding the Third Proportional to 109,990.13 and 129,916.13
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Solution
The third proportional to 109,990.13 and 129,916.13 is: 153,451.95
Step by Step Solution
- Step 1: Write the proportion equation
109,990.13 : 129,916.13 = 129,916.13 : x - Step 2: Convert to fraction form
109,990.13/129,916.13 = 129,916.13/x - Step 3: Cross multiply
109,990.13x = 129,916.13 × 129,916.13 - Step 4: Simplify right side
109,990.13x = 16,878,199,535.02 - Step 5: Solve for x
x = 16,878,199,535.02/109,990.13 - Step 6: Final answer
x = 153,451.95
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Why These Related Problems?
These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.