Finding the Fourth Proportional to 156,394.56, 215,823.24 and 84,772.68
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Solution
The fourth proportional to 156,394.56, 215,823.24 and 84,772.68 is: 116,985.62
Step by Step Solution
- Step 1: Write the proportion equation
156,394.56 : 215,823.24 = 84,772.68 : x - Step 2: Convert to fraction form
156,394.56/215,823.24 = 84,772.68/x - Step 3: Cross multiply
156,394.56x = 215,823.24 × 84,772.68 - Step 4: Simplify right side
156,394.56x = 18,295,914,461.08 - Step 5: Solve for x
x = 18,295,914,461.08/156,394.56 - Step 6: Final answer
x = 116,985.62
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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.