Finding the Fourth Proportional to 156,246.21, 215,604.36 and 87,322.95
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Solution
The fourth proportional to 156,246.21, 215,604.36 and 87,322.95 is: 120,497.06
Step by Step Solution
- Step 1: Write the proportion equation
156,246.21 : 215,604.36 = 87,322.95 : x - Step 2: Convert to fraction form
156,246.21/215,604.36 = 87,322.95/x - Step 3: Cross multiply
156,246.21x = 215,604.36 × 87,322.95 - Step 4: Simplify right side
156,246.21x = 18,827,208,748.06 - Step 5: Solve for x
x = 18,827,208,748.06/156,246.21 - Step 6: Final answer
x = 120,497.06
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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.