Finding the Fourth Proportional to 156,442.21, 215,829.19 and 102,058.31
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Solution
The fourth proportional to 156,442.21, 215,829.19 and 102,058.31 is: 140,800.63
Step by Step Solution
- Step 1: Write the proportion equation
156,442.21 : 215,829.19 = 102,058.31 : x - Step 2: Convert to fraction form
156,442.21/215,829.19 = 102,058.31/x - Step 3: Cross multiply
156,442.21x = 215,829.19 × 102,058.31 - Step 4: Simplify right side
156,442.21x = 22,027,162,380.07 - Step 5: Solve for x
x = 22,027,162,380.07/156,442.21 - Step 6: Final answer
x = 140,800.63
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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.