Finding the Fourth Proportional to 156,321.24, 215,724.29 and 84,701.78
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Solution
The fourth proportional to 156,321.24, 215,724.29 and 84,701.78 is: 116,888.99
Step by Step Solution
- Step 1: Write the proportion equation
156,321.24 : 215,724.29 = 84,701.78 : x - Step 2: Convert to fraction form
156,321.24/215,724.29 = 84,701.78/x - Step 3: Cross multiply
156,321.24x = 215,724.29 × 84,701.78 - Step 4: Simplify right side
156,321.24x = 18,272,231,352.24 - Step 5: Solve for x
x = 18,272,231,352.24/156,321.24 - Step 6: Final answer
x = 116,888.99
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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.