Finding the Fourth Proportional to 221,154.14, 331,534.74 and 86,186.96
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Solution
The fourth proportional to 221,154.14, 331,534.74 and 86,186.96 is: 129,203.87
Step by Step Solution
- Step 1: Write the proportion equation
221,154.14 : 331,534.74 = 86,186.96 : x - Step 2: Convert to fraction form
221,154.14/331,534.74 = 86,186.96/x - Step 3: Cross multiply
221,154.14x = 331,534.74 × 86,186.96 - Step 4: Simplify right side
221,154.14x = 28,573,971,374.99 - Step 5: Solve for x
x = 28,573,971,374.99/221,154.14 - Step 6: Final answer
x = 129,203.87
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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.