Finding the Fourth Proportional to 156,078.12, 215,388.36 and 84,458.14
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Solution
The fourth proportional to 156,078.12, 215,388.36 and 84,458.14 is: 116,552.53
Step by Step Solution
- Step 1: Write the proportion equation
156,078.12 : 215,388.36 = 84,458.14 : x - Step 2: Convert to fraction form
156,078.12/215,388.36 = 84,458.14/x - Step 3: Cross multiply
156,078.12x = 215,388.36 × 84,458.14 - Step 4: Simplify right side
156,078.12x = 18,191,300,263.25 - Step 5: Solve for x
x = 18,191,300,263.25/156,078.12 - Step 6: Final answer
x = 116,552.53
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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.