Finding the Fourth Proportional to 155,976.36, 215,247.53 and 84,356.38
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Solution
The fourth proportional to 155,976.36, 215,247.53 and 84,356.38 is: 116,411.88
Step by Step Solution
- Step 1: Write the proportion equation
155,976.36 : 215,247.53 = 84,356.38 : x - Step 2: Convert to fraction form
155,976.36/215,247.53 = 84,356.38/x - Step 3: Cross multiply
155,976.36x = 215,247.53 × 84,356.38 - Step 4: Simplify right side
155,976.36x = 18,157,502,012.96 - Step 5: Solve for x
x = 18,157,502,012.96/155,976.36 - Step 6: Final answer
x = 116,411.88
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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.