Finding the Fourth Proportional to 155,722.98, 214,645.32 and 121,672.08
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Solution
The fourth proportional to 155,722.98, 214,645.32 and 121,672.08 is: 167,710.27
Step by Step Solution
- Step 1: Write the proportion equation
155,722.98 : 214,645.32 = 121,672.08 : x - Step 2: Convert to fraction form
155,722.98/214,645.32 = 121,672.08/x - Step 3: Cross multiply
155,722.98x = 214,645.32 × 121,672.08 - Step 4: Simplify right side
155,722.98x = 26,116,342,546.67 - Step 5: Solve for x
x = 26,116,342,546.67/155,722.98 - Step 6: Final answer
x = 167,710.27
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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.