Finding the Fourth Proportional to 117,409.24, 162,139.84 and 81,203.46
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Solution
The fourth proportional to 117,409.24, 162,139.84 and 81,203.46 is: 112,140.37
Step by Step Solution
- Step 1: Write the proportion equation
117,409.24 : 162,139.84 = 81,203.46 : x - Step 2: Convert to fraction form
117,409.24/162,139.84 = 81,203.46/x - Step 3: Cross multiply
117,409.24x = 162,139.84 × 81,203.46 - Step 4: Simplify right side
117,409.24x = 13,166,315,404.16 - Step 5: Solve for x
x = 13,166,315,404.16/117,409.24 - Step 6: Final answer
x = 112,140.37
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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.