Finding the Fourth Proportional to 135,149.65, 186,498.49 and 74,716.68
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Solution
The fourth proportional to 135,149.65, 186,498.49 and 74,716.68 is: 103,104.58
Step by Step Solution
- Step 1: Write the proportion equation
135,149.65 : 186,498.49 = 74,716.68 : x - Step 2: Convert to fraction form
135,149.65/186,498.49 = 74,716.68/x - Step 3: Cross multiply
135,149.65x = 186,498.49 × 74,716.68 - Step 4: Simplify right side
135,149.65x = 13,934,547,997.81 - Step 5: Solve for x
x = 13,934,547,997.81/135,149.65 - Step 6: Final answer
x = 103,104.58
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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.