Finding the Fourth Proportional to 138,711.06, 191,421.93 and 75,048.99
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Solution
The fourth proportional to 138,711.06, 191,421.93 and 75,048.99 is: 103,567.97
Step by Step Solution
- Step 1: Write the proportion equation
138,711.06 : 191,421.93 = 75,048.99 : x - Step 2: Convert to fraction form
138,711.06/191,421.93 = 75,048.99/x - Step 3: Cross multiply
138,711.06x = 191,421.93 × 75,048.99 - Step 4: Simplify right side
138,711.06x = 14,366,022,510.35 - Step 5: Solve for x
x = 14,366,022,510.35/138,711.06 - Step 6: Final answer
x = 103,567.97
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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.