Finding the Fourth Proportional to 156,451.80, 215,904.51 and 84,832.92
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Solution
The fourth proportional to 156,451.80, 215,904.51 and 84,832.92 is: 117,069.99
Step by Step Solution
- Step 1: Write the proportion equation
156,451.80 : 215,904.51 = 84,832.92 : x - Step 2: Convert to fraction form
156,451.80/215,904.51 = 84,832.92/x - Step 3: Cross multiply
156,451.80x = 215,904.51 × 84,832.92 - Step 4: Simplify right side
156,451.80x = 18,315,810,024.47 - Step 5: Solve for x
x = 18,315,810,024.47/156,451.80 - Step 6: Final answer
x = 117,069.99
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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.