Finding the Fourth Proportional to 153,382.80, 211,663.08 and 86,301.84
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Solution
The fourth proportional to 153,382.80, 211,663.08 and 86,301.84 is: 119,093.62
Step by Step Solution
- Step 1: Write the proportion equation
153,382.80 : 211,663.08 = 86,301.84 : x - Step 2: Convert to fraction form
153,382.80/211,663.08 = 86,301.84/x - Step 3: Cross multiply
153,382.80x = 211,663.08 × 86,301.84 - Step 4: Simplify right side
153,382.80x = 18,266,913,264.07 - Step 5: Solve for x
x = 18,266,913,264.07/153,382.80 - Step 6: Final answer
x = 119,093.62
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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.