Finding the Fourth Proportional to 106,823.99, 147,319.55 and 91,711.82
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Solution
The fourth proportional to 106,823.99, 147,319.55 and 91,711.82 is: 126,478.55
Step by Step Solution
- Step 1: Write the proportion equation
106,823.99 : 147,319.55 = 91,711.82 : x - Step 2: Convert to fraction form
106,823.99/147,319.55 = 91,711.82/x - Step 3: Cross multiply
106,823.99x = 147,319.55 × 91,711.82 - Step 4: Simplify right side
106,823.99x = 13,510,942,856.92 - Step 5: Solve for x
x = 13,510,942,856.92/106,823.99 - Step 6: Final answer
x = 126,478.55
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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.