Finding the Fourth Proportional to 99,547.20, 149,169.60 and 73,126.08
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Solution
The fourth proportional to 99,547.20, 149,169.60 and 73,126.08 is: 109,578.05
Step by Step Solution
- Step 1: Write the proportion equation
99,547.20 : 149,169.60 = 73,126.08 : x - Step 2: Convert to fraction form
99,547.20/149,169.60 = 73,126.08/x - Step 3: Cross multiply
99,547.20x = 149,169.60 × 73,126.08 - Step 4: Simplify right side
99,547.20x = 10,908,188,103.17 - Step 5: Solve for x
x = 10,908,188,103.17/99,547.20 - Step 6: Final answer
x = 109,578.05
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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.