Finding the Fourth Proportional to 158,170.64, 218,266.08 and 86,536.40
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Solution
The fourth proportional to 158,170.64, 218,266.08 and 86,536.40 is: 119,415.09
Step by Step Solution
- Step 1: Write the proportion equation
158,170.64 : 218,266.08 = 86,536.40 : x - Step 2: Convert to fraction form
158,170.64/218,266.08 = 86,536.40/x - Step 3: Cross multiply
158,170.64x = 218,266.08 × 86,536.40 - Step 4: Simplify right side
158,170.64x = 18,887,960,805.31 - Step 5: Solve for x
x = 18,887,960,805.31/158,170.64 - Step 6: Final answer
x = 119,415.09
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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.