Finding the Fourth Proportional to 138,511.23, 191,131.68 and 84,811.47
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Solution
The fourth proportional to 138,511.23, 191,131.68 and 84,811.47 is: 117,031.37
Step by Step Solution
- Step 1: Write the proportion equation
138,511.23 : 191,131.68 = 84,811.47 : x - Step 2: Convert to fraction form
138,511.23/191,131.68 = 84,811.47/x - Step 3: Cross multiply
138,511.23x = 191,131.68 × 84,811.47 - Step 4: Simplify right side
138,511.23x = 16,210,158,744.37 - Step 5: Solve for x
x = 16,210,158,744.37/138,511.23 - Step 6: Final answer
x = 117,031.37
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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.