Finding the Fourth Proportional to 153,207.06, 211,409.60 and 85,212.96
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Solution
The fourth proportional to 153,207.06, 211,409.60 and 85,212.96 is: 117,584.91
Step by Step Solution
- Step 1: Write the proportion equation
153,207.06 : 211,409.60 = 85,212.96 : x - Step 2: Convert to fraction form
153,207.06/211,409.60 = 85,212.96/x - Step 3: Cross multiply
153,207.06x = 211,409.60 × 85,212.96 - Step 4: Simplify right side
153,207.06x = 18,014,837,788.42 - Step 5: Solve for x
x = 18,014,837,788.42/153,207.06 - Step 6: Final answer
x = 117,584.91
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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.