Finding the Fourth Proportional to 156,388.78, 215,816.97 and 84,769.08
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Solution
The fourth proportional to 156,388.78, 215,816.97 and 84,769.08 is: 116,981.58
Step by Step Solution
- Step 1: Write the proportion equation
156,388.78 : 215,816.97 = 84,769.08 : x - Step 2: Convert to fraction form
156,388.78/215,816.97 = 84,769.08/x - Step 3: Cross multiply
156,388.78x = 215,816.97 × 84,769.08 - Step 4: Simplify right side
156,388.78x = 18,294,605,995.29 - Step 5: Solve for x
x = 18,294,605,995.29/156,388.78 - Step 6: Final answer
x = 116,981.58
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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.