Finding the Fourth Proportional to 138,747.99, 191,472.81 and 75,085.79
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Solution
The fourth proportional to 138,747.99, 191,472.81 and 75,085.79 is: 103,618.70
Step by Step Solution
- Step 1: Write the proportion equation
138,747.99 : 191,472.81 = 75,085.79 : x - Step 2: Convert to fraction form
138,747.99/191,472.81 = 75,085.79/x - Step 3: Cross multiply
138,747.99x = 191,472.81 × 75,085.79 - Step 4: Simplify right side
138,747.99x = 14,376,886,245.01 - Step 5: Solve for x
x = 14,376,886,245.01/138,747.99 - Step 6: Final answer
x = 103,618.70
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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.