Finding the Fourth Proportional to 155,963.52, 214,976.88 and 121,911.84
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Solution
The fourth proportional to 155,963.52, 214,976.88 and 121,911.84 is: 168,040.75
Step by Step Solution
- Step 1: Write the proportion equation
155,963.52 : 214,976.88 = 121,911.84 : x - Step 2: Convert to fraction form
155,963.52/214,976.88 = 121,911.84/x - Step 3: Cross multiply
155,963.52x = 214,976.88 × 121,911.84 - Step 4: Simplify right side
155,963.52x = 26,208,226,998.26 - Step 5: Solve for x
x = 26,208,226,998.26/155,963.52 - Step 6: Final answer
x = 168,040.75
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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.