Finding the Fourth Proportional to 156,246.12, 215,619.84 and 84,626.73
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Solution
The fourth proportional to 156,246.12, 215,619.84 and 84,626.73 is: 116,784.99
Step by Step Solution
- Step 1: Write the proportion equation
156,246.12 : 215,619.84 = 84,626.73 : x - Step 2: Convert to fraction form
156,246.12/215,619.84 = 84,626.73/x - Step 3: Cross multiply
156,246.12x = 215,619.84 × 84,626.73 - Step 4: Simplify right side
156,246.12x = 18,247,201,982.32 - Step 5: Solve for x
x = 18,247,201,982.32/156,246.12 - Step 6: Final answer
x = 116,784.99
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1.5x scale
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.