Finding the Fourth Proportional to 154,202.24, 212,799.44 and 86,221.68
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Solution
The fourth proportional to 154,202.24, 212,799.44 and 86,221.68 is: 118,986.11
Step by Step Solution
- Step 1: Write the proportion equation
154,202.24 : 212,799.44 = 86,221.68 : x - Step 2: Convert to fraction form
154,202.24/212,799.44 = 86,221.68/x - Step 3: Cross multiply
154,202.24x = 212,799.44 × 86,221.68 - Step 4: Simplify right side
154,202.24x = 18,347,925,219.86 - Step 5: Solve for x
x = 18,347,925,219.86/154,202.24 - Step 6: Final answer
x = 118,986.11
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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.