Finding the Fourth Proportional to 158,479.26, 218,703.09 and 86,857.74
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Solution
The fourth proportional to 158,479.26, 218,703.09 and 86,857.74 is: 119,864.62
Step by Step Solution
- Step 1: Write the proportion equation
158,479.26 : 218,703.09 = 86,857.74 : x - Step 2: Convert to fraction form
158,479.26/218,703.09 = 86,857.74/x - Step 3: Cross multiply
158,479.26x = 218,703.09 × 86,857.74 - Step 4: Simplify right side
158,479.26x = 18,996,056,128.42 - Step 5: Solve for x
x = 18,996,056,128.42/158,479.26 - Step 6: Final answer
x = 119,864.62
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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.