Finding the Fourth Proportional to 126,545.58, 189,818.34 and 115,985.94
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Solution
The fourth proportional to 126,545.58, 189,818.34 and 115,985.94 is: 173,978.88
Step by Step Solution
- Step 1: Write the proportion equation
126,545.58 : 189,818.34 = 115,985.94 : x - Step 2: Convert to fraction form
126,545.58/189,818.34 = 115,985.94/x - Step 3: Cross multiply
126,545.58x = 189,818.34 × 115,985.94 - Step 4: Simplify right side
126,545.58x = 22,016,258,594.14 - Step 5: Solve for x
x = 22,016,258,594.14/126,545.58 - Step 6: Final answer
x = 173,978.88
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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.