Finding the Fourth Proportional to 153,306.84, 211,550.94 and 85,318.68
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Solution
The fourth proportional to 153,306.84, 211,550.94 and 85,318.68 is: 117,732.82
Step by Step Solution
- Step 1: Write the proportion equation
153,306.84 : 211,550.94 = 85,318.68 : x - Step 2: Convert to fraction form
153,306.84/211,550.94 = 85,318.68/x - Step 3: Cross multiply
153,306.84x = 211,550.94 × 85,318.68 - Step 4: Simplify right side
153,306.84x = 18,049,246,953.56 - Step 5: Solve for x
x = 18,049,246,953.56/153,306.84 - Step 6: Final answer
x = 117,732.82
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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.