Finding the Fourth Proportional to 126,573.19, 189,513.93 and 91,069.99
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Solution
The fourth proportional to 126,573.19, 189,513.93 and 91,069.99 is: 136,356.14
Step by Step Solution
- Step 1: Write the proportion equation
126,573.19 : 189,513.93 = 91,069.99 : x - Step 2: Convert to fraction form
126,573.19/189,513.93 = 91,069.99/x - Step 3: Cross multiply
126,573.19x = 189,513.93 × 91,069.99 - Step 4: Simplify right side
126,573.19x = 17,259,031,709.96 - Step 5: Solve for x
x = 17,259,031,709.96/126,573.19 - Step 6: Final answer
x = 136,356.14
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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.