Finding the Fourth Proportional to 158,367.64, 218,547.44 and 86,748.84
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Solution
The fourth proportional to 158,367.64, 218,547.44 and 86,748.84 is: 119,713.45
Step by Step Solution
- Step 1: Write the proportion equation
158,367.64 : 218,547.44 = 86,748.84 : x - Step 2: Convert to fraction form
158,367.64/218,547.44 = 86,748.84/x - Step 3: Cross multiply
158,367.64x = 218,547.44 × 86,748.84 - Step 4: Simplify right side
158,367.64x = 18,958,736,904.97 - Step 5: Solve for x
x = 18,958,736,904.97/158,367.64 - Step 6: Final answer
x = 119,713.45
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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.