Finding the Fourth Proportional to 189,491.18, 261,541.80 and 124,972.07
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Solution
The fourth proportional to 189,491.18, 261,541.80 and 124,972.07 is: 172,490.45
Step by Step Solution
- Step 1: Write the proportion equation
189,491.18 : 261,541.80 = 124,972.07 : x - Step 2: Convert to fraction form
189,491.18/261,541.80 = 124,972.07/x - Step 3: Cross multiply
189,491.18x = 261,541.80 × 124,972.07 - Step 4: Simplify right side
189,491.18x = 32,685,418,829.82 - Step 5: Solve for x
x = 32,685,418,829.82/189,491.18 - Step 6: Final answer
x = 172,490.45
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1.5x scale
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.