Finding the Fourth Proportional to 155,965.52, 214,979.64 and 121,913.84
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Solution
The fourth proportional to 155,965.52, 214,979.64 and 121,913.84 is: 168,043.51
Step by Step Solution
- Step 1: Write the proportion equation
155,965.52 : 214,979.64 = 121,913.84 : x - Step 2: Convert to fraction form
155,965.52/214,979.64 = 121,913.84/x - Step 3: Cross multiply
155,965.52x = 214,979.64 × 121,913.84 - Step 4: Simplify right side
155,965.52x = 26,208,993,434.22 - Step 5: Solve for x
x = 26,208,993,434.22/155,965.52 - Step 6: Final answer
x = 168,043.51
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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.