Finding the Fourth Proportional to 156,881.96, 216,498.79 and 85,261.99
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Solution
The fourth proportional to 156,881.96, 216,498.79 and 85,261.99 is: 117,662.45
Step by Step Solution
- Step 1: Write the proportion equation
156,881.96 : 216,498.79 = 85,261.99 : x - Step 2: Convert to fraction form
156,881.96/216,498.79 = 85,261.99/x - Step 3: Cross multiply
156,881.96x = 216,498.79 × 85,261.99 - Step 4: Simplify right side
156,881.96x = 18,459,116,700.44 - Step 5: Solve for x
x = 18,459,116,700.44/156,881.96 - Step 6: Final answer
x = 117,662.45
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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.