Finding the Fourth Proportional to 157,141.98, 235,712.97 and 129,381.66
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Solution
The fourth proportional to 157,141.98, 235,712.97 and 129,381.66 is: 194,072.49
Step by Step Solution
- Step 1: Write the proportion equation
157,141.98 : 235,712.97 = 129,381.66 : x - Step 2: Convert to fraction form
157,141.98/235,712.97 = 129,381.66/x - Step 3: Cross multiply
157,141.98x = 235,712.97 × 129,381.66 - Step 4: Simplify right side
157,141.98x = 30,496,935,342.13 - Step 5: Solve for x
x = 30,496,935,342.13/157,141.98 - Step 6: Final answer
x = 194,072.49
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Double scale
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Similar ratio
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1.5x scale
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.