Finding the Fourth Proportional to 105,049.20, 145,156.68 and 79,854.96
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Solution
The fourth proportional to 105,049.20, 145,156.68 and 79,854.96 is: 110,343.35
Step by Step Solution
- Step 1: Write the proportion equation
105,049.20 : 145,156.68 = 79,854.96 : x - Step 2: Convert to fraction form
105,049.20/145,156.68 = 79,854.96/x - Step 3: Cross multiply
105,049.20x = 145,156.68 × 79,854.96 - Step 4: Simplify right side
105,049.20x = 11,591,480,875.13 - Step 5: Solve for x
x = 11,591,480,875.13/105,049.20 - Step 6: Final answer
x = 110,343.35
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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.