Finding the Fourth Proportional to 126,440.64, 189,688.26 and 67,267.70
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Solution
The fourth proportional to 126,440.64, 189,688.26 and 67,267.70 is: 100,916.07
Step by Step Solution
- Step 1: Write the proportion equation
126,440.64 : 189,688.26 = 67,267.70 : x - Step 2: Convert to fraction form
126,440.64/189,688.26 = 67,267.70/x - Step 3: Cross multiply
126,440.64x = 189,688.26 × 67,267.70 - Step 4: Simplify right side
126,440.64x = 12,759,892,967.20 - Step 5: Solve for x
x = 12,759,892,967.20/126,440.64 - Step 6: Final answer
x = 100,916.07
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.