Finding the Fourth Proportional to 210,853.12, 316,277.84 and 86,106.56
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Solution
The fourth proportional to 210,853.12, 316,277.84 and 86,106.56 is: 129,159.09
Step by Step Solution
- Step 1: Write the proportion equation
210,853.12 : 316,277.84 = 86,106.56 : x - Step 2: Convert to fraction form
210,853.12/316,277.84 = 86,106.56/x - Step 3: Cross multiply
210,853.12x = 316,277.84 × 86,106.56 - Step 4: Simplify right side
210,853.12x = 27,233,596,806.63 - Step 5: Solve for x
x = 27,233,596,806.63/210,853.12 - Step 6: Final answer
x = 129,159.09
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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.