Finding the Fourth Proportional to 153,765.12, 212,040.64 and 102,777.96
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Solution
The fourth proportional to 153,765.12, 212,040.64 and 102,777.96 is: 141,729.83
Step by Step Solution
- Step 1: Write the proportion equation
153,765.12 : 212,040.64 = 102,777.96 : x - Step 2: Convert to fraction form
153,765.12/212,040.64 = 102,777.96/x - Step 3: Cross multiply
153,765.12x = 212,040.64 × 102,777.96 - Step 4: Simplify right side
153,765.12x = 21,793,104,416.29 - Step 5: Solve for x
x = 21,793,104,416.29/153,765.12 - Step 6: Final answer
x = 141,729.83
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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.