Finding the Fourth Proportional to 126,445.76, 189,681.35 and 36,490.70
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Solution
The fourth proportional to 126,445.76, 189,681.35 and 36,490.70 is: 54,739.72
Step by Step Solution
- Step 1: Write the proportion equation
126,445.76 : 189,681.35 = 36,490.70 : x - Step 2: Convert to fraction form
126,445.76/189,681.35 = 36,490.70/x - Step 3: Cross multiply
126,445.76x = 189,681.35 × 36,490.70 - Step 4: Simplify right side
126,445.76x = 6,921,605,530.19 - Step 5: Solve for x
x = 6,921,605,530.19/126,445.76 - Step 6: Final answer
x = 54,739.72
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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.