Finding the Fourth Proportional to 156,863.36, 216,470.76 and 85,242.08
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Solution
The fourth proportional to 156,863.36, 216,470.76 and 85,242.08 is: 117,633.70
Step by Step Solution
- Step 1: Write the proportion equation
156,863.36 : 216,470.76 = 85,242.08 : x - Step 2: Convert to fraction form
156,863.36/216,470.76 = 85,242.08/x - Step 3: Cross multiply
156,863.36x = 216,470.76 × 85,242.08 - Step 4: Simplify right side
156,863.36x = 18,452,417,841.58 - Step 5: Solve for x
x = 18,452,417,841.58/156,863.36 - Step 6: Final answer
x = 117,633.70
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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.